Piatt County, Illinois
Piatt 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: 16,628 (2024)
ID: 102553
|
County | Official County Government |
Contact: PIATT COUNTY CLERK
101 W WASHINGTON ST, MONTICELLO IL 61856-1672
|
|
GUS Population: 6,161 (2024)
ID: 163237
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
205 N STATE ST, MONTICELLO IL 61856-1639
|
|
GUS Population: 6,010 (2024)
ID: 194709
|
Municipal | Municipal Government Within County |
Contact: DIR COMMUNITY DEVELOPMENT
210 N HAMILTON, MONTICELLO IL 61856
|
|
GUS Population: 2,502 (2024)
ID: 125311
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 38, WHITE HEATH IL 61884-0038
|
|
TOWNSHIP OF CERRO GORDO
GUS Population: 1,872 (2024)
ID: 163235
|
Township | Municipal Government Within County |
Contact: TOWNSHIP SUPERVISOR
PO BOX 704, CERRO GORDO IL 61818-0704
|
|
TOWNSHIP OF BEMENT
GUS Population: 1,611 (2024)
ID: 125310
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
301 W WILSON ST, BEMENT IL 61813-1257
|
|
VILLAGE OF BEMENT
GUS Population: 1,452 (2024)
ID: 162573
|
Municipal | Municipal Government Within County |
Contact: TREASURER
148 W BODMAN ST, BEMENT IL 61813-1260
|
|
TOWNSHIP OF UNITY
GUS Population: 1,386 (2024)
ID: 163238
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 260, ATWOOD IL 61913-0260
|
|
TOWNSHIP OF BLUE RIDGE
GUS Population: 1,368 (2024)
ID: 103066
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 446, MANSFIELD IL 61854
|
|
VILLAGE OF CERRO GORDO
GUS Population: 1,295 (2024)
ID: 162574
|
Municipal | Municipal Government Within County |
Contact: PRESIDENT
PO BOX 497, CERRO GORDO IL 61818-0497
|
|
GUS Population: 1,097 (2024)
ID: 125034
|
Municipal | Municipal Government Within County |
Contact: VILLAGE TRUSTEE
PO BOX 319, ATWOOD IL 61913-0319
|
|
TOWNSHIP OF WILLOW BRANCH
GUS Population: 952 (2024)
ID: 163239
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 153, CISCO IL 61830-0153
|
|
VILLAGE OF MANSFIELD
GUS Population: 918 (2024)
ID: 162576
|
Municipal | Municipal Government Within County |
Contact: CLERK
PO BOX 10, MANSFIELD IL 61854-0010
|
|
TOWNSHIP OF GOOSE CREEK
GUS Population: 776 (2024)
ID: 163236
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 105, DE LAND IL 61839-0105
|
|
VILLAGE OF HAMMOND
GUS Population: 498 (2024)
ID: 162575
|
Municipal | Municipal Government Within County |
Contact: CLERK/TREAS.
PO BOX 207, HAMMOND IL 61929-0207
|
|
VILLAGE OF DE LAND
GUS Population: 442 (2024)
ID: 102814
|
Municipal | Municipal Government Within County |
Contact: PRESIDENT
PO BOX 132, DE LAND IL 61839-0081
|
|
VILLAGE OF CISCO
GUS Population: 252 (2024)
ID: 204297
|
Municipal | Municipal Government Within County |
Contact: TREASURER
PO BOX 130, CISCO IL 61830-0130
|