Lake County, Illinois
Lake 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: 718,604 (2024)
ID: 162144
|
County | Official County Government |
Contact: DEPUTY FINANCE DIRECTOR
18 N COUNTY ST, 9TH FL, WAUKEGAN IL 60085-4304
|
|
GUS Population: 89,643 (2024)
ID: 163051
|
Township | Municipal Government Within County |
Contact: HR DIRECTOR
149 S GENESEE ST, WAUKEGAN IL 60085-5685
|
|
GUS Population: 88,570 (2024)
ID: 124969
|
Municipal | Municipal Government Within County |
Contact: FINANCE DIRECTOR
100 N MARTIN LUTHER KING JR AVE, WAUKEGAN IL 60085
|
|
GUS Population: 71,816 (2024)
ID: 163050
|
Township | Municipal Government Within County |
Contact: TOWNSHIP CLERK
3050 N MAIN ST, BUFFALO GROVE IL 60089-2716
|
|
GUS Population: 65,661 (2024)
ID: 103006
|
Township | Municipal Government Within County |
Contact: TOWNSHIP SUPERVISOR
17801 WASHINGTON STREET, GURNEE IL 60031-5311
|
|
GUS Population: 63,611 (2024)
ID: 163044
|
Township | Municipal Government Within County |
Contact: TOWNSHIP SUPERVISOR
433 E WASHINGTON ST, ROUND LAKE PARK IL 60073-3018
|
|
TOWNSHIP OF LIBERTYVILLE
GUS Population: 54,674 (2024)
ID: 163048
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
359 MERRILL CT, LIBERTYVILLE IL 60048-1897
|
|
GUS Population: 46,380 (2024)
ID: 163046
|
Township | Municipal Government Within County |
Contact: TOWNSHIP SUPERVISOR
1155 EAST ROUTE 22, LAKE ZURICH IL 60047
|
|
GUS Population: 39,936 (2024)
ID: 163047
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
37908 N FAIRFIELD RD, LAKE VILLA IL 60046-9103
|
|
GUS Population: 37,715 (2024)
ID: 163049
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
906 MUIR AVE, STE B, LAKE BLUFF IL 60044-1588
|
|
GUS Population: 34,773 (2024)
ID: 163045
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
777 CENTRAL AVE, STE 15, HIGHLAND PARK IL 60035-3246
|
|
GUS Population: 34,111 (2024)
ID: 211231
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
22385 W IL ROUTE 60, MUNDELEIN IL 60060-6400
|
|
GUS Population: 32,641 (2024)
ID: 201626
|
Municipal | Municipal Government Within County |
Contact: FINANCE DIRECTOR
300 PLAZA CIR, MUNDELEIN IL 60060-2342
|
|
GUS Population: 31,786 (2024)
ID: 163052
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
601 DEERFIELD RD, DEERFIELD IL 60015-3217
|
|
GUS Population: 30,794 (2024)
ID: 124967
|
Municipal | Municipal Government Within County |
Contact: CLERK
1707 SAINT JOHNS AVE, HIGHLAND PARK IL 60035-3593
|
|
GUS Population: 30,639 (2024)
ID: 124968
|
Municipal | Municipal Government Within County |
Contact: ECONOMIC & COMMUNITY DEVELOPMENT DIRECTOR
1850 LEWIS AVE, NORTH CHICAGO IL 60064-2098
|
|
GUS Population: 30,546 (2024)
ID: 162428
|
Municipal | Municipal Government Within County |
Contact: DIRECTOR
325 N OPLAINE RD, GURNEE IL 60031-2636
|
|
GUS Population: 28,557 (2024)
ID: 125232
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
26725 W MOLIDOR RD, INGLESIDE IL 60041-9288
|
|
GUS Population: 27,946 (2024)
ID: 125231
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
PO BOX 658, ANTIOCH IL 60002-0658
|
|
GUS Population: 27,091 (2024)
ID: 194719
|
Municipal | Municipal Government Within County |
Contact: FINANCE DIRECTOR
1937 N MUNICIPAL WAY, ROUND LAKE BEACH IL 60073-4915
|
|
GUS Population: 27,002 (2024)
ID: 207822
|
Municipal | Municipal Government Within County |
Contact: FINANCE DIRECTOR
290 EVERGREEN DR, VERNON HILLS IL 60061-2904
|
|
GUS Population: 24,583 (2024)
ID: 124970
|
Municipal | Municipal Government Within County |
Contact: ENG. TECH
2828 SHERIDAN RD, ZION IL 60099-2674
|
|
GUS Population: 24,583 (2024)
ID: 137906
|
Township | Municipal Government Within County |
Contact: ACCOUNTING MANAGER
1015 27TH ST, ZION IL 60099-2623
|
|
GUS Population: 24,373 (2024)
ID: 125233
|
Township | Municipal Government Within County |
Contact: ADMINISTRATOR
505 W BONNER RD, WAUCONDA IL 60084-1103
|
|
GUS Population: 21,262 (2024)
ID: 162427
|
Municipal | Municipal Government Within County |
Contact: FINANCE OFFICER TREASURER
10 SOUTH SEYMOUR, GRAYSLAKE IL 60030
|
|
GUS Population: 20,643 (2024)
ID: 162432
|
Municipal | Municipal Government Within County |
Contact: ASSISTANT FINANCE DIRECTOR
118 W COOK AVE, LIBERTYVILLE IL 60048-1871
|
|
GUS Population: 19,960 (2024)
ID: 207819
|
Municipal | Municipal Government Within County |
Contact: FINANCE DIRECTOR
70 E MAIN ST, LAKE ZURICH IL 60047-2416
|
|
GUS Population: 19,642 (2024)
ID: 162431
|
Municipal | Municipal Government Within County |
Contact: DEPUTY CITY CLERK
220 E DEERPATH, LAKE FOREST IL 60045-1914
|
|
GUS Population: 19,138 (2024)
ID: 201625
|
Municipal | Municipal Government Within County |
Contact: DIRECTOR OF FINANCE
850 WAUKEGAN RD, DEERFIELD IL 60015-3206
|
|
GUS Population: 18,895 (2024)
ID: 103005
|
Township | Municipal Government Within County |
Contact: SUPERVISOR
40020 N GREEN BAY RD, BEACH PARK IL 60099-9505
|
|
GUS Population: 18,654 (2024)
ID: 189932
|
Municipal | Municipal Government Within County |
Contact: VILLAGE ADMINISTRATOR
442 N CEDAR LAKE RD, ROUND LAKE IL 60073-2852
|
|
GUS Population: 17,338 (2024)
ID: 204317
|
Township | Municipal Government Within County |
Contact: CUBA TOWNSHIP BOOKKEEPER
28000 W CUBA RD, BARRINGTON IL 60010-2766
|
|
GUS Population: 15,108 (2024)
ID: 194714
|
Municipal | Municipal Government Within County |
Contact: TREASURER
874 MAIN ST, ANTIOCH IL 60002-1509
|
|
GUS Population: 14,564 (2024)
ID: 204288
|
Municipal | Municipal Government Within County |
Contact: VILLAGE ADMINISTRATOR
2301 E SAND LAKE RD, LINDENHURST IL 60046-8935
|
|
GUS Population: 14,212 (2024)
ID: 212212
|
Municipal | Municipal Government Within County |
Contact: ADMINISTRATIVE ASSISTANT
11270 W WADSWORTH RD, BEACH PARK IL 60099-3358
|
|
GUS Population: 14,055 (2024)
ID: 207820
|
Municipal | Municipal Government Within County |
Contact: MANAGER OF ADMINISTRATION
101 N MAIN ST, WAUCONDA IL 60084-1823
|
|
GUS Population: 10,925 (2024)
ID: 204285
|
Municipal | Municipal Government Within County |
Contact: ACTING TREASURER
66 THILLEN DRIAVE, FOX LAKE IL 60020
|
|
GUS Population: 9,584 (2024)
ID: 207821
|
Municipal | Municipal Government Within County |
Contact: CFO
2 LAGOON DR, HAWTHORN WOODS IL 60047-9061
|
|
GUS Population: 8,737 (2024)
ID: 204286
|
Municipal | Municipal Government Within County |
Contact: TREASURER
PO BOX 519, LAKE VILLA IL 60046
|
|
GUS Population: 8,393 (2024)
ID: 184991
|
Municipal | Municipal Government Within County |
Contact: VILLAGE PLANNER
3110 RFD, LONG GROVE IL 60047-9635
|
|
GUS Population: 8,066 (2024)
ID: 102733
|
Municipal | Municipal Government Within County |
Contact: FINANCE DIRECTOR
3720 GREENLEAF AVE, ISLAND LAKE IL 60042-9506
|
|
GUS Population: 8,008 (2024)
ID: 162434
|
Municipal | Municipal Government Within County |
Contact: VILLAGE MANAGER
1 OLDE HALF DAY RD, LINCOLNSHIRE IL 60069-3035
|
|
CITY OF PARK CITY
GUS Population: 7,940 (2024)
ID: 162439
|
Municipal | Municipal Government Within County |
Contact: CLERK
3355 BELVIDERE RD, PARK CITY IL 60085-6019
|
|
GUS Population: 7,836 (2024)
ID: 204287
|
Municipal | Municipal Government Within County |
Contact: MAYOR
203 E LAKE SHORE DR, ROUND LAKE PARK IL 60073-3031
|
|
VILLAGE OF VOLO
GUS Population: 7,361 (2024)
ID: 162433
|
Municipal | Municipal Government Within County |
Contact: CLERK
500 S FISH LAKE RD, VOLO IL 60073-8211
|
|
GUS Population: 6,806 (2024)
ID: 189979
|
Township | Municipal Government Within County |
Contact: SUPERVISOR TREASURER
PO BOX 312, RUSSELL IL 60075-0312
|
|
GUS Population: 6,565 (2024)
ID: 212728
|
Municipal | Municipal Government Within County |
Contact: VILLAGE CLERK
830 SHERIDAN RD, WINTHROP HARBOR IL 60096-1699
|
|
GUS Population: 5,600 (2024)
ID: 207818
|
Municipal | Municipal Government Within County |
Contact: DIRECTOR OF FINANCE
40 E CENTER AVE, LAKE BLUFF IL 60044-2597
|
|
GUS Population: 5,358 (2024)
ID: 162430
|
Municipal | Municipal Government Within County |
Contact: MANAGER
17 HIGHWOOD AVE, 1, HIGHWOOD IL 60040-1595
|
|
GUS Population: 5,160 (2024)
ID: 102738
|
Municipal | Municipal Government Within County |
Contact: ACCOUNTANT VILLAGE OF LAKE BARRINGTON
23860 N OLD BARRINGTON RD, LAKE BARRINGTON IL 60010-1998
|