Illinois
102 counties. Illinois publishes no free statewide parcel-and-owner dataset, so LandBenchmark cannot show ownership here — the measured satellite and hazard signals are unaffected.
- Adams County855.2 sq mi
- Alexander County235.4 sq mi
- Bond County380.3 sq mi
- Boone County280.7 sq mi
- Brown County305.7 sq mi
- Bureau County869.1 sq mi
- Calhoun County253.8 sq mi
- Carroll County445.4 sq mi
- Cass County375.8 sq mi
- Champaign County996.1 sq mi
- Christian County709.5 sq mi
- Clark County501.4 sq mi
- Clay County468.4 sq mi
- Clinton County473.9 sq mi
- Coles County508.3 sq mi
- Cook County944.9 sq mi
- Crawford County443.6 sq mi
- Cumberland County345.9 sq mi
- De Witt County397.6 sq mi
- DeKalb County631.3 sq mi
- Douglas County416.6 sq mi
- DuPage County327.8 sq mi
- Edgar County623.3 sq mi
- Edwards County222.4 sq mi
- Effingham County478.8 sq mi
- Fayette County716.4 sq mi
- Ford County485.6 sq mi
- Franklin County408.9 sq mi
- Fulton County865.7 sq mi
- Gallatin County322.9 sq mi
- Greene County543.1 sq mi
- Grundy County418.1 sq mi
- Hamilton County434.6 sq mi
- Hancock County793.7 sq mi
- Hardin County177.4 sq mi
- Henderson County378.8 sq mi
- Henry County823.1 sq mi
- Iroquois County1,117.4 sq mi
- Jackson County583.6 sq mi
- Jasper County494.6 sq mi
- Jefferson County571.2 sq mi
- Jersey County369.6 sq mi
- Jo Daviess County600.9 sq mi
- Johnson County343.7 sq mi
- Kane County519.4 sq mi
- Kankakee County676.5 sq mi
- Kendall County320.2 sq mi
- Knox County716.4 sq mi
- LaSalle County1,135.1 sq mi
- Lake County443.6 sq mi
- Lawrence County372.2 sq mi
- Lee County724.8 sq mi
- Livingston County1,043.6 sq mi
- Logan County618.1 sq mi
- Macon County580.5 sq mi
- Macoupin County863 sq mi
- Madison County715.5 sq mi
- Marion County572.5 sq mi
- Marshall County386.8 sq mi
- Mason County539.4 sq mi
- Massac County237.2 sq mi
- McDonough County589.3 sq mi
- McHenry County603.4 sq mi
- McLean County1,183.2 sq mi
- Menard County314.4 sq mi
- Mercer County561.2 sq mi
- Monroe County385.3 sq mi
- Montgomery County703.8 sq mi
- Morgan County569 sq mi
- Moultrie County336 sq mi
- Ogle County758.7 sq mi
- Peoria County618.7 sq mi
- Perry County441.9 sq mi
- Piatt County439.2 sq mi
- Pike County831.4 sq mi
- Pope County368.9 sq mi
- Pulaski County199.3 sq mi
- Putnam County160.1 sq mi
- Randolph County575.4 sq mi
- Richland County360 sq mi
- Rock Island County427.5 sq mi
- Saline County380 sq mi
- Sangamon County868.2 sq mi
- Schuyler County437.3 sq mi
- Scott County250.8 sq mi
- Shelby County758.5 sq mi
- St. Clair County657.7 sq mi
- Stark County288.1 sq mi
- Stephenson County564.2 sq mi
- Tazewell County646.5 sq mi
- Union County413.4 sq mi
- Vermilion County898.3 sq mi
- Wabash County223.3 sq mi
- Warren County542.4 sq mi
- Washington County562.6 sq mi
- Wayne County713.8 sq mi
- White County495 sq mi
- Whiteside County684.1 sq mi
- Will County835.9 sq mi
- Williamson County420.2 sq mi
- Winnebago County513 sq mi
- Woodford County527.6 sq mi