Skip to Main Content

Maps Produced By The U.S. Government

The United States government is a significant producer of maps. This guide covers the major types of maps produced and how best to access them in print or online.

Maps Produced by Illinois

Although not produced by the Federal Government, maps produced by the state of Illinois are often sought after by researchers. Of particular interest are historic state highway maps.

Illinois State Highway Maps

Illinois State Geological Survey (ISGS)

Illinois Public Lands

Information and maps for State Parks can be found through the Illinois Department of Natural Resources website. For county forest preserves, one must visit each county website individually for information; the information provided varies. The Forest Preserve District of Cook County information is provided as an example.


Counties produce a plethora of maps pertaining to such things as elections and taxing districts. The amount of information posted online may vary by county. Cook County is provided here as an example.