AUGUST 2021 UPDATE: Recently-released 2020 totals from the Census Bureau's PL-94 (Redistricting) files have been summarized and are available here as "Census 2020 Supplement"...

This story map shows access to parks per 1,000 people based on geographic proximity to recreational open space. People are considered to have access to “neighborhood parks”...

Data and documentation associated with the 2050 socioeconomic forecast produced for the ON TO 2050 comprehensive plan, adopted 10 October 2018..

This local strategy map shows access to parks per 1,000 people based on geographic proximity to recreational open space. People are considered to have access to “neighborhood...

Historic Hydrologic Atlases showing the approximate depth and extent of flooding for individual 1:24,000 USGS quadrangles (and one additional non-Quad study area) in the...

Inputs and output files for the regional model used for the air quality conformity analysis approved in June 2020. They were developed by the Chicago Metropolitan Agency for...

Inputs and output files for the regional model used for the air quality conformity analysis approved in January 2021. They were developed by the Chicago Metropolitan Agency for...

Inputs and output files for the regional model used for the air quality conformity analysis approved in June 2020. They were developed by the Chicago Metropolitan Agency for...

Inputs and output files for the regional model used for the air quality conformity analysis approved in January 2021. They were developed by the Chicago Metropolitan Agency for...

Inputs and output files for the regional model used for the air quality conformity analysis approved in June 2020. They were developed by the Chicago Metropolitan Agency for...

Inputs and output files for the regional model used for the air quality conformity analysis approved in January 2021. They were developed by the Chicago Metropolitan Agency for...

Inputs and output files for the regional model used for the air quality conformity analysis approved in June 2020. They were developed by the Chicago Metropolitan Agency for...

Inputs and output files for the regional model used for the air quality conformity analysis approved in June 2020. They were developed by the Chicago Metropolitan Agency for...

Inputs and output files for the regional model used for the air quality conformity analysis approved in June 2020. They were developed by the Chicago Metropolitan Agency for...

Inputs and output files for the regional model used for the air quality conformity analysis approved in January 2021. They were developed by the Chicago Metropolitan Agency for...

Inputs and output files for the regional model used for the air quality conformity analysis approved in January 2021. They were developed by the Chicago Metropolitan Agency for...

Inputs and output files for the regional model used for the air quality conformity analysis approved in January 2021. They were developed by the Chicago Metropolitan Agency for...

The Highway Traffic Signal Inventory is a geodatabase containing information about highway traffic signals in the seven-county CMAP region. The inventory, based on...

GIS data (esri file geodatabase and shapefile) and supporting documentation depicting land use in northeast Illinois broken out to 57 categories. This dataset is considered an...

GIS dataset depicting land use in northeast Illinois broken out to 48 categories. It was created using and was created using black and white orthorectificed aerial photography...