LaSalle County, Illinois
LaSalle 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: 108,390 (2024)
ID: 193181
|
County | Official County Government |
Contact: CHAIRMAN
707 E ETNA RD, ROOM 245, OTTAWA IL 61350-1047
|
|
GUS Population: 18,775 (2024)
ID: 194703
|
Municipal | Municipal Government Within County |
Contact: CITY CLERK
301 W MADISON ST, OTTAWA IL 61350-2820
|
|
TOWNSHIP OF LA SALLE
GUS Population: 13,190 (2024)
ID: 189980
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
931 1ST ST, LA SALLE IL 61301-2537
|
|
GUS Population: 12,295 (2024)
ID: 193199
|
Municipal | Municipal Government Within County |
Contact: TOWN MANAGER
204 S BLOOMINGTON ST, STREATOR IL 61364-2996
|
|
TOWNSHIP OF BRUCE
GUS Population: 11,723 (2024)
ID: 204318
|
Township | Municipal Government Within County |
Contact: TOWNSHIP SUPERVISOR
216 N STERLING ST, STREATOR IL 61364-2368
|
|
TOWNSHIP OF OTTAWA
GUS Population: 11,211 (2024)
ID: 193231
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
325 W LAFAYETTE ST, OTTAWA IL 61350-2071
|
|
TOWNSHIP OF PERU
GUS Population: 10,026 (2024)
ID: 125238
|
Township | Municipal Government Within County |
Contact: ASSESSOR
1009 PEORIA ST, PERU IL 61354-2665
|
|
GUS Population: 9,793 (2024)
ID: 162447
|
Municipal | Municipal Government Within County |
Contact: CLERK
1901 4TH ST, PERU IL 61354-3309
|
|
GUS Population: 9,424 (2024)
ID: 204289
|
Municipal | Municipal Government Within County |
Contact: COMPTROLLER
745 2ND ST, LA SALLE IL 61301-2501
|
|
TOWNSHIP OF SOUTH OTTAWA
GUS Population: 8,330 (2024)
ID: 163068
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
518 1ST AVE, OTTAWA IL 61350-3608
|
|
TOWNSHIP OF NORTHVILLE
GUS Population: 7,314 (2024)
ID: 163064
|
Township | Municipal Government Within County |
Contact: CLERK
2689 N 45TH RD, SANDWICH IL 60548-9549
|
|
TOWNSHIP OF MENDOTA
GUS Population: 7,034 (2024)
ID: 163062
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 465, MENDOTA IL 61342-0465
|
|
GUS Population: 6,922 (2024)
ID: 162445
|
Municipal | Municipal Government Within County |
Contact: CITY CLERK
800 WASHINGTON ST, MENDOTA IL 61342-1629
|
|
TOWNSHIP OF MANLIUS
GUS Population: 6,084 (2024)
ID: 163061
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 798, SENECA IL 61360-0798
|
|
GUS Population: 4,779 (2024)
ID: 124975
|
Municipal | Municipal Government Within County |
Contact: CITY CLERK
209 LINCOLN ST, 2, MARSEILLES IL 61341-1995
|
|
TOWNSHIP OF MISSION
GUS Population: 4,059 (2024)
ID: 163063
|
Township | Municipal Government Within County |
Contact: SUPER./TREAS.
PO BOX 101, SHERIDAN IL 60551-0101
|
|
CITY OF OGLESBY
GUS Population: 3,626 (2024)
ID: 184992
|
Municipal | Municipal Government Within County |
Contact: CLERK
110 E WALNUT ST, OGLESBY IL 61348-1202
|
|
TOWNSHIP OF RUTLAND
GUS Population: 3,578 (2024)
ID: 163067
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 66, MARSEILLES IL 61341-0066
|
|
TOWNSHIP OF OTTER CREEK
GUS Population: 2,638 (2024)
ID: 103011
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 285, STREATOR IL 61364-0285
|
|
TOWNSHIP OF EARL
GUS Population: 2,433 (2024)
ID: 103008
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 418, EARLVILLE IL 60518-0418
|
|
GUS Population: 2,413 (2024)
ID: 162448
|
Municipal | Municipal Government Within County |
Contact: ADMINISTRATOR
PO BOX 580, 115 N ROBINSON ST, SHERIDAN IL 60551
|
|
TOWNSHIP OF DAYTON
GUS Population: 2,408 (2024)
ID: 103007
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
3531 E 2075TH RD, SERENA IL 60549-9728
|
|
GUS Population: 2,310 (2024)
ID: 162450
|
Municipal | Municipal Government Within County |
Contact: VILLAGE TREAS
340 N. CASH, SENECA IL 61360
|
|
TOWNSHIP OF UTICA
GUS Population: 1,945 (2024)
ID: 103012
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 472, UTICA IL 61373-0472
|
|
CITY OF EARLVILLE
GUS Population: 1,598 (2024)
ID: 102740
|
Municipal | Municipal Government Within County |
Contact: DEPUTY CITY CLERK
PO BOX 98, EARLVILLE IL 60518-0098
|
|
TOWNSHIP OF ADAMS
GUS Population: 1,598 (2024)
ID: 125234
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 22, LELAND IL 60531-0022
|
|
TOWNSHIP OF EAGLE
GUS Population: 1,444 (2024)
ID: 125235
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
EAGLE TOWNSHIP, 4 MST, STREATOR IL 61364-2613
|
|
TOWNSHIP OF EDEN
GUS Population: 1,356 (2024)
ID: 163057
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
216 S. 1ST ST., TONICA IL 61370
|
|
GUS Population: 1,343 (2024)
ID: 124976
|
Municipal | Municipal Government Within County |
Contact: VILLAGE CLERK
PO BOX 188, UTICA IL 61373-0188
|
|
TOWNSHIP OF TROY GROVE
GUS Population: 1,270 (2024)
ID: 163069
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX, TROY GROVE IL 61372-0054
|
|
TOWNSHIP OF SERENA
GUS Population: 1,119 (2024)
ID: 125239
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 146, SERENA IL 60549
|
|
TOWNSHIP OF BROOKFIELD
GUS Population: 1,054 (2024)
ID: 163054
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
1827 E 27TH RD, RANSOM IL 60470-8036
|
|
VILLAGE OF LELAND
GUS Population: 928 (2024)
ID: 102742
|
Municipal | Municipal Government Within County |
Contact: CLERK
PO BOX 647, LELAND IL 60531-0647
|
|
TOWNSHIP OF FARM RIDGE
GUS Population: 827 (2024)
ID: 163059
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 625, GRAND RIDGE IL 61325-0625
|
|
TOWNSHIP OF FALL RIVER
GUS Population: 785 (2024)
ID: 163058
|
Township | Municipal Government Within County |
Contact: TRUSTEE--CENSUS CONTACT PERSON
1805 N 25TH RD, OTTAWA IL 61350-9326
|
|
TOWNSHIP OF DIMMICK
GUS Population: 745 (2024)
ID: 163056
|
Township | Municipal Government Within County |
Contact: TOWNSHIP SUPERVISOR
3375 E 3RD RD, LA SALLE IL 61301
|
|
GUS Population: 736 (2024)
ID: 162449
|
Municipal | Municipal Government Within County |
Contact: TREASURER/SECRETARY
PO BOX 268, TONICA IL 61370-0268
|
|
TOWNSHIP OF FREEDOM
GUS Population: 601 (2024)
ID: 125236
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
1575 E US HIGHWAY 52, OTTAWA IL 61350-9656
|
|
TOWNSHIP OF MILLER
GUS Population: 583 (2024)
ID: 103010
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
3747 E 2603RD RD, SHERIDAN IL 60551-9409
|
|
TOWNSHIP OF HOPE
GUS Population: 577 (2024)
ID: 185082
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 134, LOSTANT IL 61334-0134
|
|
TOWNSHIP OF WALLACE
GUS Population: 567 (2024)
ID: 163071
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
3478 E 14TH RD, OTTAWA IL 61350-9527
|
|
TOWNSHIP OF GROVELAND
GUS Population: 559 (2024)
ID: 193230
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
338 E 8TH RD, DANA IL 61321-9778
|
|
VILLAGE OF GRAND RIDGE
GUS Population: 508 (2024)
ID: 162442
|
Municipal | Municipal Government Within County |
Contact: PRESIDENT
PO BOX 745, GRAND RIDGE IL 61325-0745
|
|
TOWNSHIP OF ALLEN
GUS Population: 502 (2024)
ID: 163053
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
1432 E 29TH RD, RANSOM IL 60470-8065
|
|
TOWNSHIP OF DEER PARK
GUS Population: 473 (2024)
ID: 163055
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
2346 E 1025TH RD, OTTAWA IL 61350
|
|
TOWNSHIP OF OPHIR
GUS Population: 438 (2024)
ID: 125237
|
Township | Municipal Government Within County |
Contact: OPHIR TOWNSHIP SUPERVISOR
PO BOX 78, TRIUMPH IL 61371-0078
|
|
GUS Population: 430 (2024)
ID: 193198
|
Municipal | Municipal Government Within County |
Contact: TREASURER
PO BOX 186, LOSTANT IL 61334-0186
|
|
TOWNSHIP OF WALTHAM
GUS Population: 416 (2024)
ID: 125240
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
RR 1, UTICA IL 61373
|
|
VILLAGE OF NAPLATE
GUS Population: 414 (2024)
ID: 162446
|
Municipal | Municipal Government Within County |
Contact: CLERK
2000 OTTAWA AVE, OTTAWA IL 61350-3444
|
|
TOWNSHIP OF VERMILLION
GUS Population: 378 (2024)
ID: 163070
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
2107 E 875TH RD, TONICA IL 61370-9503
|