Warren County, Illinois
Warren County profile, demographic data, and geographic information.
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 16,217 (2024)
ID: 207766
|
County | Official County Government |
Contact: WARREN COUNTY CLERK/RECORDER
100 W BROADWAY, MONMOUTH IL 61462-1797
|
|
TOWNSHIP OF MONMOUTH
GUS Population: 9,628 (2024)
ID: 163355
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
311 E ARCHER AVE, MONMOUTH IL 61462-1836
|
|
GUS Population: 8,639 (2024)
ID: 162667
|
Municipal | Municipal Government Within County |
Contact: CITY ADMINISTRATOR
100 E BROADWAY, MONMOUTH IL 61462-5704
|
|
TOWNSHIP OF ROSEVILLE
GUS Population: 1,112 (2024)
ID: 163356
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 775, ROSEVILLE IL 61473-0775
|
|
TOWNSHIP OF SPRING GROVE
GUS Population: 927 (2024)
ID: 163357
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 53, ALEXIS IL 61412-0053
|
|
TOWNSHIP OF TOMPKINS
GUS Population: 853 (2024)
ID: 189995
|
Township | Municipal Government Within County |
Contact: TOMPKINS TOWNSHIP SUPERVISOR
PO BOX 395, KIRKWOOD IL 61447-0395
|
|
VILLAGE OF ROSEVILLE
GUS Population: 839 (2024)
ID: 162668
|
Municipal | Municipal Government Within County |
Contact: CLERK
PO BOX 91, ROSEVILLE IL 61473-0091
|
|
VILLAGE OF ALEXIS
GUS Population: 755 (2024)
ID: 162666
|
Municipal | Municipal Government Within County |
Contact: VILLAGE TREASURER
PO BOX 356, ALEXIS IL 61412-0356
|
|
VILLAGE OF KIRKWOOD
GUS Population: 648 (2024)
ID: 201632
|
Municipal | Municipal Government Within County |
Contact: VILLAGE CLERK
PO BOX 399, KIRKWOOD IL 61447-0399
|
|
TOWNSHIP OF GREENBUSH
GUS Population: 514 (2024)
ID: 163353
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
1608 54TH AVE, AVON IL 61415-9233
|
|
TOWNSHIP OF SUMNER
GUS Population: 476 (2024)
ID: 163358
|
Township | Municipal Government Within County |
Contact: TOWNSHIP SUPERVISOR
2532 45TH ST, LITTLE YORK IL 61453-9731
|
|
TOWNSHIP OF COLDBROOK
GUS Population: 420 (2024)
ID: 201643
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
1347 200TH AVE, MONMOUTH IL 61462-9207
|
|
TOWNSHIP OF FLOYD
GUS Population: 398 (2024)
ID: 163352
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 21, CAMERON IL 61423-0021
|
|
TOWNSHIP OF KELLY
GUS Population: 353 (2024)
ID: 103105
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
1631 ANGLING RD, ALEXIS IL 61412-9121
|
|
TOWNSHIP OF HALE
GUS Population: 320 (2024)
ID: 125352
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
578 200TH AVE, KIRKWOOD IL 61447
|
|
TOWNSHIP OF ELLISON
GUS Population: 300 (2024)
ID: 125351
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 130, SMITHSHIRE IL 61478
|
|
TOWNSHIP OF BERWICK
GUS Population: 296 (2024)
ID: 125350
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 22, ABINGDON IL 61410-0022
|
|
VILLAGE OF LITTLE YORK
GUS Population: 268 (2024)
ID: 189951
|
Municipal | Municipal Government Within County |
Contact: TREASURER
PO BOX 169, LITTLE YORK IL 61453-0169
|
|
TOWNSHIP OF LENOX
GUS Population: 257 (2024)
ID: 163354
|
Township | Municipal Government Within County |
Contact: LENOX TOWNSHIP SUPERVISOR
1046 140TH AVE, MONMOUTH IL 61462-9255
|
|
TOWNSHIP OF SWAN
GUS Population: 231 (2024)
ID: 103106
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
348 120TH ST, ROSEVILLE IL 61473-9482
|
|
TOWNSHIP OF POINT PLEASANT
GUS Population: 132 (2024)
ID: 125353
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
306 30TH ST, ROSEVILLE IL 61473-9283
|