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COUNTY
Adams County
Alexander County (regrid)
Bond County
Brown County
Boone County
Bureau County
Calhoun County (regrid)
Carroll County (subscription)
Cass County
Champaign County
Christian County
Clark County
Clay County
Clinton County
Coles County
Cook County
Crawford County
Cumberland County
Dekalb County
DeWitt County
Douglas County
DuPage County
Edgar County
Edwards County
Effingham County
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Fulton County
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Grundy County
Hamilton County
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Hardin County (regrid)
Henderson County
Henry County
Iroquois County
Jackson County
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Jersey County
Jo Daviess County
Johnson County (regrid)
Kane County
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Knox County
Lake County
LaSalle County
Lawrence County
Lee County
Livingston County (subscription)
Logan County
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Madison County
Marion County
Marshall County
Mason County
Massac County
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McHenry County
McLean County
Menard County
Mercer County (regrid)
Monroe County
Montgomery County
Morgan County
Moultrie County
Ogle County
Peoria County
Perry County
Piatt County
Pike County
Pope County (regrid)
Pulaski County (regrid)
Putnam County
Randolph County
Richland County
Rock Island County
Saline County (regrid)
Sangamon County
Schuyler County
Scott County
Shelby County
St Clair County
Stark County
Stephenson County
Tazewell County
Union County (regrid)
Vermilion County
Wabash County (regrid)
Warren County
Washington County (regrid)
Wayne County
White County
Whiteside County
Will County
Williamson County
Winnebago County
Woodford County
OTHER LINKS
ArcGIS Online Login
LIGHTBOX / EDR
Historical Aerials / NETR
IL Area Code Map
IL Political Boundary Layers
CMAP EDA
Chicago Interactive Map
Chicago Geospatial Data
Environmental Justice Communities Map
Transportation Disadvantaged Census Tracts
US Wind Turbine Database Map
USACE National Levee Database
National Park Service GIS Data
IROADS
IDOT AADT (GETTING AROUND IL)
IDOT BRIDGE INFORMATION SYSTEM
IDOT Annual GIS Data Download
IDOT GIS Open Data Portal
IDNR GIS Maps
IDNR Elevation Finder Map
EarthCache ArcPro Addon
ISGS Geospatial Clearinghouse Maps
Illinois GIS Association
UIUC GIS Undergraduate Degree
UIUC GIS Certificate

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The links provided are a compilation of publicly available GIS resources on the internet. The list will be updated as sites are added or removed, or as systems are upgraded. The information found on these sites is not affiliated with Illinois GIS nor guaranteed by this site. Use at your own discretion.