Government Resources · Maps & Geography


Maps of pollution and toxic waste sites from the EPA.
This is a one-stop government portal to maps, data, and other images.
National Geospacial - Intelligence Agency
Site of the official government source for nautical and aeronautical charts and maps.
Microsoft’s Terraserver site offers high-resolution aerial photographs and topographic maps from the U.S. Geological Survey.
US Cities & State Gazetteer
Census information, physical and cultural features, aerial photographs, maps, and zip code data.
U.S. Geological Survey
Data, maps, and other images from the world’s largest provider of earth science information.
USGS Geography - The National Map
Continuously updated topographical resource which is useful for research in economic and community development, land and natural resource management, and health and safety services.


Geographic Names Information System Query Form
Information about almost 2 million physical and cultural geographic features in the U.S. and its territories. Use the "Help" page for tips on using the database.
Geologic Maps of Ohio
Online maps of Ohio bedrock, glacial and surface features, earthquakes, and oil and gas beds.
ODNR Division of Water Maps
Detailed maps of lakes, rivers, canals, and other water features of Ohio.
Ohio Division of Geological Survey
Offers publications, maps, interactive maps, data, and educational resources.


CAGIS Internet Map Server
Local maps including a Hamilton County infrastructure map, searchable by community or neighborhood and by type of facility, such as schools, fire or police stations, and libraries.
OKI Regional Council of Governments
Data for Cincinnati TriState area on land use, transportation systems, and regional economic development. Numerous maps on demographic and economic features of the region, such as transportation patterns, land use, and population.
Regional Planning Commission Data Center
Online maps of the county as a whole, by township, and by municipality from the Map Shop of the Hamilton County Regional Planning Commission.