Municipalities, Northeastern Illinois (2026)

What is this data? Municipal boundaries for 284 municipalities in the CMAP region. Data includes FIPS code and a shading column. How can this data be used? What projects use this data? Municipal boundaries can be used as a basemap or starting point for different analyses. Who created this data? How and when? This data was created by CMAP staff who collected and merged data from county GIS departments. Where can I find the latest data? How frequently is it updated? The latest data can be found on some, but not all, of the county GIS department websites. It is updated by the departments at different cadences, but this feature layer will be updated annually.