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Illinois

265 endpoints across 145 organizations, 9 with none listed

No ArcGIS REST endpoint listed 9
Has GIS, but not ArcGIS REST Gallatin not ArcGIS
No known server Marion help wanted
Has GIS, but not ArcGIS REST Mason not ArcGIS
Has GIS, but not ArcGIS REST Pike not ArcGIS
Has GIS, but not ArcGIS REST Putnam not ArcGIS
Has GIS, but not ArcGIS REST Richland not ArcGIS
No known server Diamond help wanted
No known server Kane help wanted
No known server Marion help wanted

Compiled using the List of Federal, State, County and City ArcGIS Servers by Joseph Elfelt (mappingsupport.com) as reference material, copyright © Joseph Elfelt. Free for everyone. No commercial use without his specific written permission, and anything derived from this must carry the same notice. Full terms. Datum contributes periodically to the server list via web scraping, targeted searches, and ArcGIS Hub monitoring. Datum © 2026 Jacob Hogue

Counties by endpoint count

Click a county to filter. Cities and towns count toward the county they sit in, and a county total counts every endpoint associated with it, so the counties do not add up to the state. 30 of 265 are run by agencies that cover more than one county, so they shade none of it.