Ohio data sets

On-street accessible parking spaces along Ohio's roadways, recorded by ODOT as part of its Americans with Disabilities Act (ADA) compliance program.

Marked crosswalks along Ohio's roadways, recorded by ODOT as part of its Americans with Disabilities Act (ADA) compliance program.

Curb ramps at crossings along Ohio's roadways, recorded by ODOT as part of its Americans with Disabilities Act (ADA) compliance program.

Pedestrian push buttons at crossings along Ohio's roadways, recorded by ODOT as part of its Americans with Disabilities Act (ADA) compliance program.

Pedestrian refuge islands within crossings along Ohio's roadways, recorded by ODOT as part of its Americans with Disabilities Act (ADA) compliance program.

Sidewalks along Ohio's roadways, recorded by ODOT as part of its Americans with Disabilities Act (ADA) compliance program.

Locations of Advertising Device Control (ADC) Permits along the state highway system. ADC Permits ensure advertising devices meet established criteria for size, lighting, and spacing of signs, displays, and devices. Enacted in 1965, the Highway Beautification Act federally requires all states to maintain effective control over all outdoor advertising. Through an agreement with the federal government and as defined in the Ohio Revised Code and Ohio Administrative Code, the Ohio Department of Transportation is responsible for this oversight along controlled interstate and federal-aid primary highways in the state.

ODOT's Adjusted Urbanized Areas are US Census Urban Area boundaries expanded through a cooperative process by responsible state and local officials. Urbanized boundaries are used to determine a roadway’s functional class, federal aid eligibility, and speed limit transition points, in accordance with 23 U.S.C. 101 and O.R.C 4511.21.

ODOT's inventory of roadway segments for the Adopt-A-Highway Program. Adopt-A-Highway is one of the methods in which ODOT controls litter and to keep the state's highways beautiful. The program allows volunteer groups to adopt a two-mile section or an interchange along a state, federal, or interstate route.

Every ODOT transportation project on record that sits at a single location — bridges, culverts, intersections and the like — whatever its stage or fiscal year. The companion line data set covers projects that run along a stretch of road.

Every ODOT transportation project on record that runs along a stretch of road — resurfacing, widening, safety work and the like — whatever its stage or fiscal year. The companion point data set covers projects at a single location, such as a bridge.

Active transportation planning aims to provide communities safe and convenient access to home, work, school, recreation, and transit via walking and biking. This dataset contains composite scores for active transportation demand and need. Scores are derived from quantifying factors that generate bicycle and pedestrian movement, and can be used to inform and prioritize. Factors considered in demand analysis include: employment density, retail employment density, population density, park density, presence of existing active transportation, presence of colleges/universities, and poverty levels. Scores are applied at the geographic level of census block group.

Inventory of public and private airports, heliports, and seaplane facilities in the state of Ohio.

Stormwater control measures along ODOT roadways that run as a line — the drainage features built to slow and filter runoff before it reaches a stream, maintained under ODOT's stormwater management program.

Stormwater control measures at single locations on ODOT roadways — the drainage features built to slow and filter runoff before it reaches a stream, maintained under ODOT's stormwater management program.

Every bridge in Ohio that carries or crosses over a public street or highway, with the inspection and condition information ODOT records for it.

Urban areas as identified by the 2020 US Census. The Census Bureau identifies two types of urban areas: Urbanized Areas (UAs) of 50,000 or more people; Urban Clusters (UCs) of at least 2,500 and less than 50,000 people. “Rural” encompasses all population, housing, and territory not included within an urban area.

Boundaries of Ohio's cities, towns and villages.

Projected growth in car traffic on Ohio's roadways, from the congestion model ODOT's Office of Statewide Planning and Research maintains. Use it to see where passenger volumes are expected to rise fastest.

Projected growth in truck traffic on Ohio's roadways, from the congestion model ODOT's Office of Statewide Planning and Research maintains. Use it to see where freight volumes are expected to rise fastest.

Modeled traffic volume on each roadway segment set against the segment's modeled capacity — the volume-to-capacity ratio from the congestion model ODOT's Office of Statewide Planning and Research maintains. Ratios approaching and above 1 mark the segments running at or over capacity.

The stretch of Ohio along Lake Erie, including the state's portion of the lake itself, where the Ohio Department of Natural Resources Office of Coastal Management has jurisdiction under the Ohio Coastal Management Plan.

Culverts and conduits that carry water beneath Ohio's roadways, inventoried by ODOT.

Boundaries of the 88 counties in Ohio.

County mileposts along Ohio's routes — the reference points that give every location on the road network a measured position within its county.

Reported traffic crashes in Ohio during 2021, mapped to where they happened, with the severity, circumstances and contributing factors recorded on each crash report.

Reported traffic crashes in Ohio during 2022, mapped to where they happened, with the severity, circumstances and contributing factors recorded on each crash report.

Reported traffic crashes in Ohio during 2023, mapped to where they happened, with the severity, circumstances and contributing factors recorded on each crash report.

Reported traffic crashes in Ohio during 2024, mapped to where they happened, with the severity, circumstances and contributing factors recorded on each crash report.

Reported traffic crashes in Ohio during 2025, mapped to where they happened, with the severity, circumstances and contributing factors recorded on each crash report.

ODOT projects currently under construction, shown as the stretches of road they run along. This is the full project list narrowed to those whose construction start and end dates bracket today.

ODOT projects currently under construction at a single location — bridges, culverts and the like. This is the full project list narrowed to those whose construction start and end dates bracket today.

Physical features recorded along Ohio's roadways — intersections, municipal corporation lines, bridges and mileposts — in the order they occur along each route.

Projects in the work plans of ODOT's 12 districts, shown as the stretches of road they run along — what each district is delivering in its own area.

Projects in the work plans of ODOT's 12 districts at a single location, such as a bridge or culvert — what each district is delivering in its own area.

Ohio's broadest ecological regions, as classified by the US Environmental Protection Agency. Ecoregions group land that shares climate, geology, soils, vegetation and wildlife; this is the coarsest of four nested levels.

Ohio's ecological regions at the second of four nested levels of the US Environmental Protection Agency's classification, subdividing the broadest regions. Ecoregions group land that shares climate, geology, soils, vegetation and wildlife.

Ohio's ecological regions at the third of four nested levels of the US Environmental Protection Agency's classification. Ecoregions group land that shares climate, geology, soils, vegetation and wildlife.

Ohio's most detailed ecological regions — the finest of four nested levels of the US Environmental Protection Agency's classification. Ecoregions group land that shares climate, geology, soils, vegetation and wildlife.

Road segments that were part of the historic Federal Aid Priority system. The designation no longer drives funding on its own, but other networks are still defined against it — the National Truck Network, for one.

Road segments eligible for federal aid funding — the first thing to check when asking whether work on a given road can draw federal money.

Road segments that carry a designated functional class: the federal classification, running from interstate down to local road, that describes the role a road plays in the network. Functional class drives federal aid eligibility, design standards and much of how the network is reported.

Abandoned underground mines in Ohio recorded as linear workings, from the state's Abandoned Underground Mine Inventory. Undermined ground is a subsidence risk that has to be identified before anything is built on it.

Abandoned underground mines in Ohio recorded at point locations, from the state's Abandoned Underground Mine Inventory. Undermined ground is a subsidence risk that has to be identified before anything is built on it.

Places where ODOT has drilled test borings to sample the soil and rock beneath a site, going back to the 1920s. Existing borings are a ready source of ground information near a proposed project.

Landslide sites recorded by ODOT's Office of Geotechnical Engineering — slope failures on or beside the highway network.

The extents of ODOT's geotechnical investigation projects, going back to the 1920s. Use it to find what subsurface work has already been done near a site.

Rock slopes and rock cuts along Ohio's highways, inventoried by ODOT's Office of Geotechnical Engineering, where falling rock is a maintenance and safety concern.

Lighting installed along Ohio's highways, inventoried by ODOT.

Inventory of bridges with historical value in Ohio, as listed in the National Register or those eligible for listing with the National Register.

The Ohio road segments in the Highway Performance Monitoring System (HPMS) sample — the portion of the network the state reports in detail to the Federal Highway Administration each year, which underpins national performance measures and funding apportionment.

Ohio's streams and rivers as a connected network, from the US Geological Survey's National Hydrography Dataset, with the Strahler stream order that places each reach in the drainage network — higher orders sit further downstream and tend to be larger channels. Use it to find the waterways a project crosses or drains into.

Short stretches of road that connect freight and passenger transfer facilities — ports, rail yards, airports — to the National Highway System. They are a federally recognized designation in their own right.

Places in Ohio where freight or passengers transfer between modes — rail yards, ports, airports and truck terminals.

Roadside control cabinets in ODOT's Intelligent Transportation Systems (ITS) network — the enclosures housing the electronics behind cameras, message signs and detectors.

Field devices in ODOT's Intelligent Transportation Systems (ITS) network — the cameras, message signs, detectors and similar roadside equipment used to monitor and manage traffic.

The communication and power lines connecting ODOT's Intelligent Transportation Systems (ITS) field equipment.

Power service connections feeding ODOT's Intelligent Transportation Systems (ITS) field equipment.

Pull boxes along ODOT's Intelligent Transportation Systems (ITS) conduit runs — the access points used to pull and splice cable.

Sections of the state highway system that have been designated as memorial highways by the Ohio Revised Code chapters 5533 and 5534.

Boundaries of Ohio's metropolitan planning organizations — the regional bodies that carry out transportation planning and program federal funds in urban areas of more than 50,000 people.

Areas covered by ODOT's municipal separate storm sewer system (MS4) stormwater permit, drawn from the US Census Bureau's urbanized area boundaries. Work inside these areas carries stormwater permit obligations.

Areas covered by the municipal separate storm sewer system (MS4) stormwater permit program. It takes in the urban areas defined by the 2000, 2010 and 2020 censuses, plus more than 30 cities outside them that hold a stormwater permit of their own. Work inside these areas carries permit obligations.

Ohio streams where a freshwater mussel survey is required before in-stream work, based on the Ohio Department of Natural Resources (ODNR) stream classification and the drainage area above each reach. A survey has a seasonal window, so it is worth checking early in a project.

Ohio's segments of the National Highway Freight Network — the federally designated highways carrying the country's most critical freight movements, which are eligible for dedicated freight funding. In Ohio the network consists entirely of Primary Highway Freight System routes.

The surviving historic mile markers along the National Road in Ohio, inventoried by ODOT as cultural resources.

Ohio's segments of the National Truck Network, the routes on which federally sized large trucks may operate. It covers all Interstate routes and all former Federal Aid Priority routes.

Wetlands in Ohio as mapped by the US Fish and Wildlife Service's National Wetlands Inventory — a first screen for where a project is likely to need wetland permitting.

ODOT projects scheduled over the next four fiscal years, shown as the stretches of road they run along — the near-term program of work.

ODOT projects scheduled over the next four fiscal years at a single location, such as a bridge or culvert — the near-term program of work.

Ohio's segments of the National Highway System — the Interstates, principal arterials and connectors that carry the nation's strategic traffic, and the network most federal performance and design requirements apply to.

ODOT projects that have completed a traffic noise analysis, shown as the stretches of road they run along. Together with the point-located noise analysis projects, these cover every location studied.

ODOT projects that have completed a traffic noise analysis at a single location. Together with the line-mapped noise analysis projects, these cover every location studied.

Traffic noise measurements captured in support of ODOT's noise abatement program.

Noise walls along Ohio's highways, which shield neighboring properties from traffic noise. The inventory covers proposed walls as well as those already standing.

Ohio's watershed boundaries at the 10-digit level of the national hydrologic unit system, published by the USDA Natural Resources Conservation Service. These subdivide the 8-digit subbasins.

Ohio's watershed boundaries at the 11-digit level of the national hydrologic unit system, published by the USDA Natural Resources Conservation Service — finer than the 10-digit watersheds.

Ohio's watershed boundaries at the 12-digit level of the national hydrologic unit system, published by the USDA Natural Resources Conservation Service — roughly a local drainage area, and the finest standard national level.

Ohio's watershed boundaries at the 14-digit level of the national hydrologic unit system, published by the USDA Natural Resources Conservation Service — the most detailed watershed breakdown held here.

Ohio's watershed boundaries at the 8-digit subbasin level of the national hydrologic unit system, published by the USDA Natural Resources Conservation Service. Watersheds are the frame for stormwater, stream crossing and water quality questions; this is the coarsest level held here.

ODOT's network of continuously operating GPS reference stations, which supply the survey-grade positioning corrections used for project surveying and construction across Ohio.

Boundaries of ODOT's 12 administrative districts

ODOT's own facilities across Ohio — garages, offices and rest areas.

Places flagged for possible restrictions on routine bridge maintenance, arising from environmental regulations or concerns. A flag means the work may have to be timed or cleared before it can go ahead, not that it is already ruled out.

Places flagged for possible restrictions on filling or excavation, arising from environmental regulations or concerns. A flag means the work may have to be timed or cleared before it can go ahead, not that it is already ruled out.

Places flagged for possible restrictions on herbicide application, arising from environmental regulations or concerns. A flag means the work may have to be timed or cleared before it can go ahead, not that it is already ruled out.

Places flagged for possible restrictions on roadside mowing, arising from environmental regulations or concerns. A flag means the work may have to be timed or cleared before it can go ahead, not that it is already ruled out.

Places flagged for possible restrictions on some other kind of roadway maintenance, arising from environmental regulations or concerns. A flag means the work may have to be timed or cleared before it can go ahead, not that it is already ruled out.

Places flagged for possible restrictions on pile driving, arising from environmental regulations or concerns. A flag means the work may have to be timed or cleared before it can go ahead, not that it is already ruled out.

Places flagged for possible restrictions on tree clearing, arising from environmental regulations or concerns. A flag means the work may have to be timed or cleared before it can go ahead, not that it is already ruled out.

Ohio House of Representatives district boundaries.

Sequential mile positions of the Ohio River within the bounds of the State of Ohio

Ohio Senate district boundaries.

Points where roadway drainage discharges into Ohio's streams, inventoried by ODOT.

Park and Ride sites located on the ODOT freeway system

Pavement condition ratings on Ohio's local road system — the 0-to-100 score ODOT's pavement engineers assign from observed distress such as cracking, rutting and patching. The lower the rating, the sooner the pavement needs work.

Pavement condition ratings on Ohio's state highway system — the 0-to-100 score ODOT's pavement engineers assign from observed distress such as cracking, rutting and patching. The lower the rating, the sooner the pavement needs work.

Unincorporated areas and census-designated places in Ohio, represented as point locations.

ODOT's pollinator habitat program site locations

ODOT projects from the previous four fiscal years, shown as the stretches of road they ran along. It records what was on the program rather than what was delivered — cancelled projects, and ones never filed, are in here too.

ODOT projects from the previous four fiscal years at a single location, such as a bridge or culvert. It records what was on the program rather than what was delivered — cancelled projects, and ones never filed, are in here too.

Road segments with their ODOT priority system rating — the classification ODOT uses to rank routes by importance when setting maintenance and operations standards.

Service territory boundaries of Ohio's electric utilities, from the Public Utilities Commission of Ohio (PUCO). Use it to find which utility serves a project area when planning relocations and coordination.

Service territory boundaries of Ohio's telephone providers, from the Public Utilities Commission of Ohio (PUCO). Use it to find which provider serves a project area when planning relocations and coordination.

Highway–rail grade crossings in Ohio, inventoried by the Public Utilities Commission of Ohio (PUCO).

Ohio Rail Development Commission's inventory of active and abandoned rail lines

Major Land Resource Areas in Ohio — broad regions of similar soils, landform, climate and land use defined by the USDA Natural Resources Conservation Service, used as a framework for soil and agricultural work.

Boundaries of Ohio's regional transportation planning organizations (RTPOs). The state designates these to bring officials from areas under 50,000 people into transportation planning: they identify local needs, support local governments, and feed into the statewide planning process.

ODOT's inventory of retaining walls.

Ohio's official road network: every roadway ODOT maintains or takes a particular interest in, with the physical and administrative detail that describes it — mileage, lane miles, functional class, federal aid eligibility and traffic. This is the state's certified source for road mileage, and the base network most other roadway data sets here reference.

Roadside and runway weather stations across Ohio. Their sensors report pavement and surface conditions, which is what winter operations are directed from.

Inventory of guardrails and safety barriers on Ohio roadways.

Road segments designated under the Ohio Scenic Byways Program for their scenic, historic, cultural or natural value.

River segments in Ohio designated under the National Wild and Scenic Rivers System, together with the state's own scenic and wild river designations from ODNR. Designation constrains what can be built on or near the river.

The land within 1,000 feet of Ohio's designated wild and scenic river segments — a screening area for projects close enough to a protected river to need review.

School district boundaries in Ohio.

Inventory of school zone extensions, sections of roadway where an existing school zone may differ from the limits established in the Ohio Revised Code.

The Public Land Survey System grid for Ohio — the sections, lots and tracts the original land surveys divided the state into, and the framework against which property descriptions and deeds are still written.

ODOT's inventory of roadway signs.

ODOT's inventory of sign supports.

The order in which ODOT clears state roads of snow and ice, with the priority level assigned to each route.

Locations of specialty or sensitive crops provided by Ohio Department of Agriculture (ODA) and FieldWatch.com.

Locations of potential herbicide and insecticide spraying restrictions due to nearby specialty crops. Crop locations provided by Ohio Department of Agriculture (ODA) and FieldWatch.com.

Inventory of ODOT approved speed zones where the speed limit is altered to be lower than the statutory speed limits given in the Ohio Revised Code.

Ohio's signed state and US bicycle routes — the long-distance network that links cities and continues across state lines.

State mileposts along Ohio's routes — the reference points that give every location on the state network a measured position.

Projects in Ohio's Statewide Transportation Improvement Program (STIP) that run along a stretch of road. The STIP is the state's federally required four-year program, listing the projects scheduled for some phase of implementation over that period — the step at which a plan becomes a dated commitment to deliver.

Projects in Ohio's Statewide Transportation Improvement Program (STIP) at a single location, such as a bridge or culvert. The STIP is the state's federally required four-year program, listing the projects scheduled for some phase of implementation over that period — the step at which a plan becomes a dated commitment to deliver.

ODOT's inventory of stone culverts, a cultural resource monitored by the Office of Environmental Services.

Ohio's segments of the Strategic Highway Network (STRAHNET) — the highways the Department of Defense relies on to move military equipment and personnel.

Links to ODOT's straight line diagrams — drawings that lay out a highway's physical characteristics as if the road ran perfectly straight, measured along the centerline from the county line. They are published for every Interstate, US and state route.

Ohio township boundaries

Road segments with traffic monitoring data, including average annual daily traffic (AADT) — the standard measure of how much traffic a road carries on a typical day, and the starting point for most capacity, safety and freight analysis.

ODOT maintained traffic count stations, including permanent stations and short term count data collection locations.

Ohio's fixed-route transit service lines, submitted annually by local and regional transit authorities.

Ohio's fixed-route transit stops, submitted annually by local and regional transit authorities.

Outlets where ODOT's roadway underdrains discharge — the pipe ends that let water out of the drainage layer beneath the pavement.

U.S. House of Representative district boundaries in Ohio.

American Community Survey figures on how people live and work in every Ohio census block group — a neighborhood-sized area of roughly 1,200 people. Covers income, poverty, education, employment, commuting (how people get to work, what time they leave home, and whether they work in their own town, county or state), vehicle access, housing cost, internet access and health insurance, including Medicaid, in six five-year releases spanning 2010 through 2024, all reported on 2020 boundaries so the periods can be compared. These are survey estimates rather than a complete count, so figures for any one small area are approximate.

Population, race and ethnicity, and housing occupancy for every Ohio census block group — a neighborhood-sized area of roughly 1,200 people — at the 1990, 2000, 2010 and 2020 censuses. All four years are reported on 2020 boundaries, so a neighborhood can be tracked across three decades of growth or decline. The census is a complete count rather than a survey, so there are no sampling margins of error — but the earlier figures were apportioned onto those 2020 boundaries, which carries an uncertainty of its own, and the data set records how much of each neighborhood's figure was apportioned that way.

Boundaries of Ohio's census block groups as drawn for the 2020 census. A block group is the smallest area the Census Bureau publishes socioeconomic data for — roughly 600 to 3,000 people, about 1,200 in Ohio, typically a few residential streets — and it is the geography the census population and American Community Survey figures are mapped on.

Ohio's 88 counties as the Census Bureau draws them, with each county's land and water area and the freight region it belongs to in the Commodity Flow Survey (CFS), the Bureau's survey of goods shipped by businesses. The freight regions are the ones the Freight Analysis Framework's flows are reported for, so this is how a county is placed in those flows, and it is a reliable county outline and name list for mapping or summarizing anything else by county.

The Census Bureau's official estimate of how many people of each age, sex, race and Hispanic origin lived in each Ohio county on July 1 of every year since 1970. Use it to see how a county is ageing, how many children, working-age adults or older residents it has and how that has changed, or how its racial and ethnic make-up has shifted over half a century. The years before 2020 are the Bureau's revised figures for those decades, made after each census; the earlier decades distinguish fewer races, and the 1970s and 1980s do not record Hispanic origin.

The Census Bureau's official population estimate for each Ohio county on July 1 of every year since 1970, with what drove each year's change since 2000: births, deaths, people moving in from abroad and people moving in from or out to the rest of the country. Use it for a county's current population, for half a century of growth or decline, and for whether a county is growing because people are moving there or because births outnumber deaths. The years before 2020 are the Bureau's revised figures for those decades, made after each census, and the 1970 and 1980 censuses' own counts are kept beside them.

The divisions of each Ohio county as the Census Bureau draws them each year: townships and towns in the states where those are local governments, and statistical county divisions where they are not. Together they cover the whole state with no gaps, so they are the local unit for mapping or summarizing anything across rural and urban areas alike, and each one's current population is in the Bureau's annual population estimates, which join to these outlines.

The Census Bureau's official population estimate for every Ohio city, village and town, and for every township or town where those are local governments, on July 1 of every year since 1990, with the 1980 and 1990 censuses' counts beside them. Use it for a municipality's current population, to rank places by size or growth, or to see which communities have been gaining or losing people over four decades. The years from 2000 to 2019 are the Bureau's revised figures for those decades, made after the 2010 and 2020 censuses; the 1990s figures were never revised.

The boundaries of Ohio's cities, villages, boroughs and towns as the Census Bureau draws them each year, together with the named unincorporated communities it calls census-designated places. Use them to outline a municipality on the map, to find which city or village a road, bridge or facility is in, or to summarize anything else by city and village. Each place's current population is in the Bureau's annual population estimates, which join to these outlines.

Ohio's five-digit ZIP Code areas as the Census Bureau draws them for the 2020 census, called ZIP Code Tabulation Areas (ZCTAs). They are the closest public outline of a ZIP Code: use them to place an address, a street or a facility given by ZIP Code on the map, or to summarize anything else by ZIP Code. They approximate the Postal Service's delivery areas rather than reproduce them, and ZIP Codes that serve only post office boxes or a single building have none.

The land-use classes found on Ohio's parcels — agricultural, mineral, industrial, commercial, residential, exempt, tax-abated, public utility and unclassified — with the plain-English label for each code and a count of how many parcels carry it. Use it to read the parcel data by what land is actually used for.

Property boundaries for all 88 Ohio counties, assembled by Ohio's Geographically Referenced Information Program (OGRIP) from what each county auditor maintains into a single statewide layer. Every parcel carries its land-use class, its size and its county, which makes this the base layer for questions about what the land along a corridor or around a project is used for. It is a public extract, so it carries no owner names and no assessed values.

Where Ohio's workers live and where they go to work: job counts for every pair of home and workplace neighborhood (a census block group of roughly 1,100 people), from the Census Bureau's LEHD program. This is the data behind commute-shed questions — which communities feed a job center, how far people travel to a corridor, how those patterns have shifted. Covers workplaces in Ohio for 2002, 2007, 2010, 2014, 2019, 2021 and 2023.

Jobs held by the people who live in each Ohio neighborhood — a census block group of roughly 1,100 people — broken out by the industry they work in and by age, earnings, race, ethnicity, education and sex. This is the residence side of the employment picture — use it for questions about a community's workforce, where the workplace data answers questions about its employers. Covers 2002 through 2023.

Jobs located in each Ohio neighborhood — a census block group of roughly 1,100 people — broken out by industry, age, earnings, race, ethnicity, education and sex, and — for private-sector jobs — by the age and size of the employer. This is where work actually happens rather than where workers live, which makes it the starting point for job-center, corridor and economic-development questions. Counts come from state unemployment-insurance payroll records, not a survey, and cover 2002 through 2023.

A directory matching each of Ohio's 88 counties to the freight region it belongs to. Ohio is divided into six freight regions — Cincinnati, Cleveland, Columbus, Dayton, Toledo, and the remainder of the state — and this is how you find which one a given county falls in.

The list of transportation modes used in the freight flow data — truck, rail, water, air, pipeline, multiple modes and mail — so freight volumes can be reported by how the goods actually move.

Estimated freight moving to, from and within Ohio in 2022: how much tonnage and how much value travels between each pair of origin and destination regions, broken out by what the commodity is and how it moves, including truck, rail, water, air, pipeline and multiple-mode shipments. Domestic shipments, imports arriving in Ohio and exports leaving from Ohio are all included. These are shipments between regions, not traffic measured on any particular highway; for designated freight routes see the National Highway Freight Network.

The regions used throughout the freight flow data: 134 areas covering the United States plus 8 world regions for international trade. Ohio is split into six of them — Cincinnati, Cleveland, Columbus, Dayton, Toledo, and the remainder of the state — and those six are the ones drawn on the map. Each is a group of whole counties, so they do not line up with metropolitan planning organization boundaries, census urban areas or state transportation department districts.

Plain-English names for the commodity groups used in the freight flow data — the Standard Classification of Transported Goods, 42 categories running from cereal grains and coal through machinery, motorized vehicles and mixed freight. Use it to report freight volumes by what is being shipped.

The transit agencies whose fixed-route service reaches Ohio, with each one's headquarters and its National Transit Database ID, the key to its ridership, service and cost figures.

The paths of the fixed-route bus, rail, streetcar, subway and ferry services that run in Ohio, as the transit agencies publish them, compiled nationally by the Bureau of Transportation Statistics. Good for seeing where transit runs, which kinds of service reach an area, and how far each route goes.

Every fixed-route transit stop and station in Ohio, with the kinds of service that call there and whether the agency marks it wheelchair accessible. Good for measuring who lives or works within walking distance of transit, and where accessible boarding is missing.

The state's own projection of each Ohio county's population from 2020 to 2050, in five-year steps, by five-year age group and by sex. Use it to see where the population is expected to grow or shrink over a long-range planning horizon, and which age groups drive the change, such as where older residents who rely on transit and paratransit will be most numerous, or where the school-age population is falling.

Every public elementary and secondary school in Ohio, charter schools included, with its location, the grades it teaches, how many students it enrolls by grade and race, its teachers, and how many of its students qualify for free or reduced-price lunch, for each school year since 2017–18. Good for planning around schools: safe routes and walking distance, bus and transit access, the traffic a school draws, where enrollment is growing or shrinking, and where low-income students are concentrated.

How many new homes building permits authorized in each Ohio county every year since 1990, split into single-family houses, duplexes, small 3–4 unit buildings and apartment buildings of five units or more, with the number of buildings and their construction value. Use it to see where housing is being added, how fast, and in what form, as an early sign of growth in households, travel demand and school enrollment, and to compare counties or follow one county's building boom or slowdown over three decades.

How many new homes each Ohio city, village, township, town or county permit office authorized every year since 1992, split into single-family houses, duplexes, small 3–4 unit buildings and apartment buildings of five units or more, with the number of buildings and their construction value. Use it to find the communities where housing growth is concentrated, to follow one community's development over time, and to anticipate the new trips, utility demand and school enrollment that new homes bring below the county level.

How many people worked in each Ohio county and industry, how many workplaces employed them and what they were paid, as averages for every year since 1990, from the near-complete count of jobs that employers report for unemployment insurance. Use it to compare counties and industries year by year, to follow an industry's jobs and average pay over three decades, and to see how much of a county's payroll one industry such as manufacturing or health care carries, down to individual industries.

How many people worked in each Ohio county and industry, how many workplaces employed them and what they were paid, every quarter since 1990, from the near-complete count of jobs that employers report for unemployment insurance. Use it to see which industries a county's jobs and payroll depend on, where an industry such as warehousing or manufacturing is growing, and how a local economy moved through a plant opening or a recession, down to individual industries.