Rock Island County, Illinois
Rock Island 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: 142,731 (2024)
ID: 102554
|
County | Official County Government |
Contact: EXECUTIVE ASSISTANT
1504 3RD AVE, ROCK ISLAND IL 61201-8612
|
|
GUS Population: 42,442 (2024)
ID: 125047
|
Municipal | Municipal Government Within County |
Contact: FINANCE DIRECTOR
1630 8TH AVE, MOLINE IL 61265
|
|
GUS Population: 36,434 (2024)
ID: 162602
|
Municipal | Municipal Government Within County |
Contact: INTERIM FINANCE DIRECTOR
1528 3RD AVE, ROCK ISLAND IL 61201-8612
|
|
TOWNSHIP OF SOUTH MOLINE
GUS Population: 36,150 (2024)
ID: 163267
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
2521 53RD ST, MOLINE IL 61265-5008
|
|
GUS Population: 22,570 (2024)
ID: 163264
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
620 18TH ST, MOLINE IL 61265-2150
|
|
GUS Population: 21,549 (2024)
ID: 225536
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
209 19TH ST, EAST MOLINE IL 61244-1124
|
|
GUS Population: 20,995 (2024)
ID: 125046
|
Municipal | Municipal Government Within County |
Contact: FINANCE DIRECTOR
915 16TH AVE, EAST MOLINE IL 61244-2107
|
|
GUS Population: 18,114 (2024)
ID: 125322
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
1019 27TH AVE, ROCK ISLAND IL 61201-5231
|
|
TOWNSHIP OF ROCK ISLAND
GUS Population: 15,786 (2024)
ID: 125321
|
Township | Municipal Government Within County |
Contact: TOWNSHIP SUPERVISOR
2827 7TH AVE, STE 1, ROCK ISLAND IL 61201-1904
|
|
TOWNSHIP OF BLACKHAWK
GUS Population: 9,433 (2024)
ID: 163258
|
Township | Municipal Government Within County |
Contact: CLERICAL
230 4TH ST W, MILAN IL 61264-2418
|
|
GUS Population: 8,003 (2024)
ID: 125050
|
Municipal | Municipal Government Within County |
Contact: MAYOR
121 11TH ST, SILVIS IL 61282-1017
|
|
VILLAGE OF MILAN
GUS Population: 5,033 (2024)
ID: 207859
|
Municipal | Municipal Government Within County |
Contact: CLERK
405 1ST ST E, MILAN IL 61264-2740
|
|
TOWNSHIP OF COAL VALLEY
GUS Population: 4,457 (2024)
ID: 163260
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 337, COAL VALLEY IL 61240-0337
|
|
GUS Population: 3,883 (2024)
ID: 162600
|
Municipal | Municipal Government Within County |
Contact: VILLAGE ADMINISTRATOR
900 1ST STREET, COAL VALLEY IL 61240
|
|
TOWNSHIP OF BOWLING
GUS Population: 3,340 (2024)
ID: 163259
|
Township | Municipal Government Within County |
Contact: BOWLING TOWNSHIP SUPERVISOR
16816 28TH ST W, MILAN IL 61264-5602
|
|
TOWNSHIP OF ANDALUSIA
GUS Population: 2,238 (2024)
ID: 125318
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 222, ANDALUSIA IL 61232-0222
|
|
GUS Population: 1,808 (2024)
ID: 212001
|
Municipal | Municipal Government Within County |
Contact: VILLAGE DIRECTOR
PO BOX 426, 106 1ST AVE, CARBON CLIFF IL 61239
|
|
TOWNSHIP OF COE
GUS Population: 1,763 (2024)
ID: 163261
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
9327 239TH ST N, PORT BYRON IL 61275-9312
|
|
GUS Population: 1,755 (2024)
ID: 207858
|
Municipal | Municipal Government Within County |
Contact: CLERK
PO BOX 77, HAMPTON IL 61256-0077
|
|
GUS Population: 1,643 (2024)
ID: 125048
|
Municipal | Municipal Government Within County |
Contact: CLERK
PO BOX 438, PORT BYRON IL 61275-0438
|
|
TOWNSHIP OF EDGINGTON
GUS Population: 1,408 (2024)
ID: 125320
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
14325 139TH AVE CT W, TAYLOR RIDGE IL 61284
|
|
TOWNSHIP OF PORT BYRON
GUS Population: 1,368 (2024)
ID: 163265
|
Township | Municipal Government Within County |
Contact: TWP SUPERVISOR
1305 N HIGH ST, PORT BYRON IL 61275-9473
|
|
VILLAGE OF ANDALUSIA
GUS Population: 1,167 (2024)
ID: 189946
|
Municipal | Municipal Government Within County |
Contact: VILLAGE CLERK
PO BOX 789, ANDALUSIA IL 61232-0789
|
|
TOWNSHIP OF RURAL
GUS Population: 998 (2024)
ID: 163266
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
7201 134TH AVE, COAL VALLEY IL 61240-9715
|
|
GUS Population: 935 (2024)
ID: 162601
|
Municipal | Municipal Government Within County |
Contact: CLERK
PO BOX 134, RAPIDS CITY IL 61278-0134
|
|
GUS Population: 848 (2024)
ID: 163262
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 311, CORDOVA IL 61242-0311
|
|
GUS Population: 751 (2024)
ID: 163263
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
26003 124TH AVE W, ILLINOIS CITY IL 61259-9199
|
|
TOWNSHIP OF BUFFALO PRAIRIE
GUS Population: 704 (2024)
ID: 103075
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
11614 204TH ST W, ILLINOIS CITY IL 61259-9761
|
|
TOWNSHIP OF ZUMA
GUS Population: 667 (2024)
ID: 103076
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
3839 230TH ST N, PORT BYRON IL 61275-9780
|
|
VILLAGE OF CORDOVA
GUS Population: 663 (2024)
ID: 201631
|
Municipal | Municipal Government Within County |
Contact: VILLAGE CLERK
PO BOX 6, CORDOVA IL 61242-0006
|
|
TOWNSHIP OF CANOE CREEK
GUS Population: 587 (2024)
ID: 125319
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
226 4TH ST, HILLSDALE IL 61257-9647
|
|
VILLAGE OF REYNOLDS
GUS Population: 488 (2024)
ID: 125049
|
Municipal | Municipal Government Within County |
Contact: VILLAGE CLERK
PO BOX 158, REYNOLDS IL 61279-0158
|
|
GUS Population: 470 (2024)
ID: 102824
|
Municipal | Municipal Government Within County |
Contact: CLERK/TREASURER
PO BOX 566, MILAN IL 61264-0566
|
|
VILLAGE OF HILLSDALE
GUS Population: 413 (2024)
ID: 102825
|
Municipal | Municipal Government Within County |
Contact: VILLAGE CLERK
415 MAIN STEET, HILLSDALE IL 61257
|