Illinois
2,821 jurisdictions across counties, municipalities, and townships.
Counties 102
- Adams County pop. 64,954
- Alexander County pop. 5,030
- Bond County pop. 16,596
- Boone County pop. 53,159
- Brown County pop. 6,421
- Bureau County pop. 32,883
- Calhoun County pop. 4,369
- Carroll County pop. 15,698
- Cass County pop. 12,773
- Champaign County pop. 205,943
- Christian County pop. 33,662
- Clark County pop. 15,300
- Clay County pop. 13,143
- Clinton County pop. 36,793
- Coles County pop. 46,765
- Cook County pop. 5,173,146
- Crawford County pop. 18,659
- Cumberland County pop. 10,345
- De Witt County pop. 15,341
- Dekalb County pop. 100,414
- Douglas County pop. 19,722
- Dupage County pop. 924,885
- Edgar County pop. 16,520
- Edwards County pop. 6,075
- Effingham County pop. 34,430
- Fayette County pop. 21,384
- Ford County pop. 13,511
- Franklin County pop. 37,442
- Fulton County pop. 33,197
- Gallatin County pop. 4,903
- Greene County pop. 11,843
- Grundy County pop. 52,989
- Hamilton County pop. 7,911
- Hancock County pop. 17,400
- Hardin County pop. 3,650
- Henderson County pop. 6,312
- Henry County pop. 48,907
- Iroquois County pop. 26,827
- Jackson County pop. 52,565
- Jasper County pop. 9,193
- Jefferson County pop. 36,877
- Jersey County pop. 21,333
- Jo Daviess County pop. 21,939
- Johnson County pop. 13,463
- Kane County pop. 515,588
- Kankakee County pop. 106,601
- Kendall County pop. 134,867
- Knox County pop. 49,268
- Lake County pop. 711,239
- Lasalle County pop. 108,965
Municipalities 1,294
- Village of Northfield pop. 5,634
- Village of Norwood pop. 430
- Village of Oak Brook pop. 8,086
- Village of Oak Grove pop. 470
- Village of Oak Lawn pop. 57,013
- Village of Oak Park pop. 53,224
- Village of Oakdale pop. 196
- Village of Oakford pop. 232
- Village of Oakwood pop. 1,307
- Village of Oakwood Hills pop. 2,078
- Village of Oblong pop. 1,367
- Village of Oconee pop. 139
- Village of Odell pop. 989
- Village of Odin pop. 913
- Village of Ogden pop. 721
- Village of Ohio pop. 463
- Village of Ohlman pop. 110
- Village of Okawville pop. 1,362
- Village of Old Mill Creek pop. 164
- Village of Old Ripley pop. 87
- Village of Old Shawneetown pop. 114
- Village of Olmsted pop. 286
- Village of Olympia Fields pop. 4,654
- Village of Omaha pop. 212
- Village of Onarga pop. 1,319
- Village of Oquawka pop. 1,120
- Village of Orangeville pop. 756
- Village of Oreana pop. 866
- Village of Orion pop. 1,741
- Village of Orland Hills pop. 6,725
- Village of Orland Park pop. 57,850
- Village of Oswego pop. 35,316
- Village of Owaneco pop. 218
- Village of Palatine pop. 66,321
- Village of Palestine pop. 1,223
- Village of Palmer pop. 222
- Village of Palmyra pop. 599
- Village of Palos Park pop. 4,871
- Village of Panama pop. 338
- Village of Panola pop. 44
- Village of Papineau pop. 134
- Village of Park Forest pop. 21,261
- Village of Parkersburg pop. 186
- Village of Patoka pop. 523
- Village of Paw Paw pop. 818
- Village of Pawnee pop. 2,715
- Village of Payson pop. 1,007
- Village of Pearl pop. 103
- Village of Pearl City pop. 779
- Village of Pecatonica pop. 2,059
Townships 1,425
- Township of Osceola pop. 878
- Township of Osco pop. 423
- Township of Oskaloosa pop. 338
- Township of Oswego pop. 56,851
- Township of Otego pop. 1,489
- Township of Ottawa pop. 11,185
- Township of Otter Creek pop. 2,659
- Township of Otter Creek pop. 868
- Township of Otto pop. 2,108
- Township of Owego pop. 301
- Township of Owen pop. 3,599
- Township of Oxford pop. 1,149
- Township of Palatine pop. 111,886
- Township of Palestine pop. 1,133
- Township of Palmyra pop. 2,870
- Township of Palos pop. 55,667
- Township of Pana pop. 6,119
- Township of Panola pop. 375
- Township of Panther Creek pop. 295
- Township of Papineau pop. 436
- Township of Paradise pop. 972
- Township of Paris pop. 9,037
- Township of Parker pop. 161
- Township of Partridge pop. 578
- Township of Patoka pop. 932
- Township of Patterson pop. 395
- Township of Patton pop. 5,242
- Township of Paw Paw pop. 312
- Township of Pawnee pop. 3,000
- Township of Payson pop. 1,722
- Township of Pea Ridge pop. 189
- Township of Peach Orchard pop. 554
- Township of Pearl pop. 196
- Township of Pecatonica pop. 4,109
- Township of Pekin pop. 27,299
- Township of Pella pop. 157
- Township of Pembroke pop. 1,785
- Township of Pendleton pop. 1,141
- Township of Penn pop. 310
- Township of Penn pop. 87
- Township of Pennsylvania pop. 154
- Township of Peoria City pop. 96,531
- Township of Peotone pop. 4,382
- Township of Perry pop. 481
- Township of Perryton pop. 453
- Township of Persifer pop. 1,068
- Township of Peru pop. 10,085
- Township of Pesotum pop. 868
- Township of Petty pop. 621
- Township of Phenix pop. 1,681