Access a large collection of maps, apps, and data layers from around the globe in categories such as basemaps, imagery, boundaries, people, infrastructure, and environment. Content marked as Premium requires an ArcGIS Online organizational account to access. To create your Ohio State ArcGIS Online account, refer to the getting started documentation at go.osu.edu/esri.

The Big Ten Academic Alliance Geoportal connects users to digital geospatial resources, including GIS datasets, web services, and digitized historical maps from multiple data clearinghouses and library catalogs across the Midwest.

Data.gov is the home of the U.S. Government's open data, with datasets harvested from federal, state, and local sources.

GeoPlatform supports discovering national geospatial data assets (NGDAs) across data themes guided by the Federal Geographic Data Committee (FGDC). Data themes include climate and weather, cultural resources, governmental units and administrative/statistical boundaries, transportation, water, and more.

Data.census.gov is the central platform to access data and digital content from the U.S. Census Bureau, the leading source of quality data about the nation's people and economy.

TIGER data products from the U.S. Census Bureau are an authoritative source for U.S. geographic features such as administrative and statistical boundaries, roads, water features, and more.

Esri's COVID-19 GIS Hub provides access to maps, datasets, and web applications related to COVID-19 from a wide variety of sources.

(Licensed for use by Ohio State affiliates only) The Data Axle (formerly Infogroup) U.S. Historical Business Database contains geocoded, establishment-level records for millions of U.S. businesses, including the company name, location, industry classification code, number of employees, sales volume, and more.

(Licensed for use by Ohio State affiliates only) The Data Axle (formerly Infogroup) U.S. Historical Residential Database contains geocoded, household-level records for millions of U.S. residences, including length of residence, own/rent status, home value, household income and wealth, and more.

(Licensed for use by Ohio State affiliates only) Access county-level data for U.S. Presidential elections in 2000, 2004, 2008, 2012, and 2016.

The HUD-eGIS Storefront provides a one-stop shop for HUD's geospatial datasets, with categories including community indicators, location affordability, mortgage insurance programs, rental assistance programs, and more.

Find open data from the U.S. Department of Transportation by travel mode (such as aviation, roads, transit) or by category (such as safety, energy and environment, and transportation infrastructure).

HIFLD open data provides access to national foundation-level geospatial datasets that can be useful for supporting community preparedness and resiliency. Categories include agriculture, communications, emergency services, natural hazards, public health, water supply, and more.

Discover education demographic and geographic estimates from the National Center for Education Statistics. Categories include K-12 schools, postsecondary schools, school districts, locale boundaries, and social and economic data.

The National Historical Geographic Information System provides easy access to summary tables and time series of population, housing, agriculture, and economic data, along with GIS-compatible boundary files, for years from 1790 through the present and for all levels of U.S. census geography, including states, counties, tracts, and blocks.

(Licensed for use by Ohio State affiliates only) Policymap is an online data and mapping application that provides access to datasets across categories such as demographics, housing, economy, education, health, and more. Datasets come from both public and proprietary sources.

Esri’s Racial Equity GIS Hub is an ongoing, continuously expanding resource hub to assist organizations working to address racial inequities. The Racial Equity GIS Hub includes data layers, maps, applications, training resources, articles on best practices, solutions, and examples of how Esri users from around the world are leveraging GIS to address racial inequities.

(Licensed for use by Ohio State affiliates only) Social Explorer is an online data and mapping application that provides access to a variety of U.S. census data products, along with other datasets on topics such as housing, business patterns, crime, health, and more.

The U.S. Geological Survey's (USGS) EROS data archive is home to the world's largest collection of remotely sensed images of the Earth’s land surface. Product categories include aerial photography, digital elevation, land cover products, Landsat imagery, NASA LPDAAC satellite programs, vegetation monitoring, and more.

Earth Explorer provides a map-based interface for discovering and accessing remotely-sensed data products from the EROS data archive.

Geospatial data products from the EPA, with categories including air, energy, environmental justice, health and risk, land and cleanup, sustainability, water, and more.

FEMA GIS supports the emergency management community with world-class geospatial information, services, and technologies to prepare for, protect against, respond to, recover from, and mitigate against all hazards.

Earthdata provides a single search interface for discovering and accessing earth observation and other data products from across all of NASA's Distributed Active Archive Centers (DAACs).

The National Land Cover Database provides nationwide data on land cover and land cover change at 30m resolution. Additional raster data products include urban imperviousness, tree canopy, and rangeland.

The National Map (from USGS) provides a map-based interface for accessing a variety of U.S. geospatial datasets, including elevation, hydrography, geographic names, topo map data, and more.

Explore the many geospatial datasets made available by the National Oceanic and Atmospheric Administration, including weather, climate, shoreline, and bathymetry data.

The National Park Service open data platform includes categories such as boundaries, campsites, facilities, points of interest, trails, and more.

NREL provides access to maps and geospatial data in support of renewable energy projects, with datasets related to biomass, solar, wind, and more.

The USDA Geospatial Data Gateway provides access to data related to precipitation, temperature, conservation easements, geology, soils, and more, as well as imagery from the National Agriculture Imagery Program (NAIP).

Access USDA datasets on topics including crops and plants, demographics, prices, livestock and animals, and more, as well as the national Cropland Data Layer (CDL).

Access U.S. Fish and Wildlife Service datasets, including critical habitat, the national wetlands inventory (NWI), and more.

The U.S. Forest Service geospatial data discovery platform provides access to data in categories such as recreation, fire and aviation, forest management, ecosystems, vegetation, and more.

The USGS Science Data Catalog provides access to USGS research and monitoring data from across the nation. Topics include earth sciences, environmental issues, life sciences, natural hazards, natural resources, and more.