Administrative boundaries

Illinois counties

  • 102 boundary areas included
  • 9 data fields with sample values
  • Part of the USA counties collection for Illinois
Preview of Illinois counties map
Enlarged preview of Illinois counties map

Illinois counties Data Sample

Below is a sample of some of the fields included in this GIS file. These columns can be visualized in QGIS, Power BI, Leaflet, and other mapping or analytics tools supporting GeoJSON.

Field Name Sample Data
fid 515, 516, 517
Name Jackson, Jefferson, Jersey
STATE IL, IL, IL
COUNTYNAME Jackson, Jefferson, Jersey
FIPS 17077, 17081, 17083
CWA PAH, PAH, LSX
TIME_ZONE C, C, C
FE_AREA ss, sc, sw
CARTO_REGION State, State, State

Dataset information

About the Illinois counties GeoJSON file

  • Map ID: usa_counties_il
  • Collection: USA counties
  • Region: Illinois
  • Boundary areas: 102
  • Attribute fields: 9
  • Preview generated: 9 August 2026

This administrative boundary dataset contains 102 boundary areas and 9 data fields from the USA counties collection for Illinois.

£95.00
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Note on Compatibility

We strive to provide universally compatible GeoJSON files, but sometimes a mapping application may require a specific coordinate reference system (projection) or particular data fields. If your file doesn't load or display as expected, please get in touch. We can reproject the file, add additional data columns to the polygons, or even develop a custom mapping tool—whether simple or complex—to ensure your data visualizes correctly. We won't rest until everything works just the way you need!

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