Illinois · All counties
Illinois Parcel Maps & County GIS Viewers
Illinois counties publish their own PIN-based tax maps. Use this hub to reach the official GIS viewer for Cook through the southern tip without hunting county sites by hand.
We link out — we do not host parcels. Platbookmapper does not draw lot lines, embed county FeatureServers, or redistribute tax-parcel geometry for Illinois. Our role is to connect you to the official county GIS / parcel viewer that maintains the property information. Not a survey product.
PIN search across Illinois counties
Platbookmapper is a link-out directory only. Open a county’s official GIS, then search by Property Index Number (PIN), address, or owner. Collar counties around Chicago usually have full-featured viewers; downstate counties range from modern hubs to simpler assessor portals.
Most of Illinois is PLSS-based. PINs encode township and section information in county-specific formats—paste from a tax bill. River counties along the Mississippi and Ohio may show floodplain overlays; Chicago-region apps often expose TIF and special-service area context. Townships exist for assessment in many counties, but the interactive map is still typically a county GIS product.
Online parcels support research, not staking. Confirm boundaries with recorded documents or a licensed surveyor.
Cook and collar-county PINs are long; copy-paste beats retyping. Downstate, some counties still route map clicks through older Silverlight-era replacements—if a link 404s, use Verify via map and report nothing invented. Platbookmapper will not invent substitute URLs.
Plat and parcel guides
These articles cover plat maps, parcel maps, and property lines for this state. The list below opens the official local GIS viewer.
- Property Lines Map IL
- City of Chicago Maps and Plats
- McHenry County, IL Parcel Viewer, GIS & Plat Map Guide
- DuPage County, IL Parcel Viewer, GIS & Plat Map Guide
- Cook County IL GIS & Parcel Map Guide
All Illinois counties (102)
96 with curated GIS links; remaining counties use the verify path via the map.
- Adams County
- Alexander County
- Bond County
- Boone County
- Brown County
- Bureau County
- Calhoun County
- Carroll County
- Cass County
- Champaign County
- Christian County
- Clark County
- Clay County
- Clinton County
- Coles County
- Cook County
- Crawford County
- Cumberland County
- De Witt County
- DeKalb County
- Douglas County
- DuPage County
- Edgar County
- Edwards County
- Effingham County
- Fayette County
- Ford County
- Franklin County
- Fulton County
- Gallatin County
- Greene County
- Grundy County
- Hamilton County
- Hancock County
- Hardin County
- Henderson County
- Henry County
- Iroquois County
- Jackson County
- Jasper County
- Jefferson County
- Jersey County
- Jo Daviess County
- Johnson County
- Kane County
- Kankakee County
- Kendall County
- Knox County
- Lake County
- LaSalle County
- Lawrence County
- Lee County
- Livingston County
- Logan County
- Macon County
- Macoupin County
- Madison County
- Marion County
- Marshall County
- Mason County
- Massac County
- McDonough County
- McHenry County
- McLean County
- Menard County
- Mercer County
- Monroe County
- Montgomery County
- Morgan County
- Moultrie County
- Ogle County
- Peoria County
- Perry County
- Piatt County
- Pike County
- Pope County
- Pulaski County
- Putnam County
- Randolph County
- Richland County
- Rock Island County
- Saline County
- Sangamon County
- Schuyler County
- Scott County
- Shelby County
- St. Clair County
- Stark County
- Stephenson County
- Tazewell County
- Union County
- Vermilion County
- Wabash County
- Warren County
- Washington County
- Wayne County
- White County
- Whiteside County
- Will County
- Williamson County
- Winnebago County
- Woodford County
Related
- All state hubs (A–Z)
- Nationwide county GIS map
- Parcel map & property search guides
- How this directory works
Frequently asked questions
How do I find a Illinois county parcel map?
Pick your county on this Illinois hub (or on the national Platbookmapper map), then open the official GIS / parcel viewer link. Each county maintains its own app — we link out and do not host parcels.
Are Illinois online parcel maps survey-grade?
No. County GIS parcels are tax and planning layers. For legal boundaries, use a recorded plat or hire a licensed surveyor.
Why do some Illinois counties say Verify via map?
We only mark a county Listed when we have a curated direct interactive viewer URL. Verify counties still open from the national map with the best available outbound link — always confirm it is the official local source.
Does Platbookmapper draw property lot lines?
No. We do not host or redraw parcel geometry. Our product is a USA → county → official GIS link directory so you can open the local interactive map in a new tab.