Rock County, Wisconsin
Rock 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: 165,461 (2024)
ID: 177072
|
County | Official County Government |
Contact: PLANNER III
51 S MAIN ST, JANESVILLE WI 53545-3978
|
|
GUS Population: 66,428 (2024)
ID: 177224
|
Municipal | Municipal Government Within County |
18 N JACKSON ST, PO BOX 5005, JANESVILLE WI 53547-5005
|
|
GUS Population: 36,633 (2024)
ID: 194229
|
Municipal | Municipal Government Within County |
Contact: COMMUNITY DEVELOPMENT DIRECTOR
100 STATE ST, BELOIT WI 53511-6234
|
|
GUS Population: 7,904 (2024)
ID: 177673
|
Township | Municipal Government Within County |
Contact: TOWN CLERK
2445 S AFTON RD, BELOIT WI 53511-8663
|
|
GUS Population: 6,138 (2024)
ID: 205669
|
Municipal | Municipal Government Within County |
Contact: CITY ADMINISTRATOR
12 ALBION ST, EDGERTON WI 53534-1866
|
|
GUS Population: 5,819 (2024)
ID: 115101
|
Municipal | Municipal Government Within County |
Contact: ADMINISTRATOR
PO BOX 76, EVANSVILLE WI 53536-0076
|
|
GUS Population: 5,778 (2024)
ID: 136582
|
Municipal | Municipal Government Within County |
Contact: MAYOR
710 S JANESVILLE ST, MILTON WI 53563-1748
|
|
GUS Population: 3,692 (2024)
ID: 188049
|
Township | Municipal Government Within County |
Contact: CLERK
1628 N LITTLE CT, JANESVILLE WI 53548-7613
|
|
GUS Population: 3,667 (2024)
ID: 177675
|
Township | Municipal Government Within County |
Contact: CLERK/TREASURER
2738 W FULTON CENTER DR, EDGERTON WI 53534-8528
|
|
TOWN OF MILTON
GUS Population: 3,122 (2024)
ID: 177677
|
Township | Municipal Government Within County |
Contact: TOWN CLERK
23 1ST ST, MILTON WI 53563-1122
|
|
GUS Population: 3,037 (2024)
ID: 115262
|
Township | Municipal Government Within County |
5814 S DUGGAN R, BELOIT WI 53511-9206
|
|
GUS Population: 2,561 (2024)
ID: 209912
|
Township | Municipal Government Within County |
Contact: TOWN CLERK
5818 N KENNEDY RD, MILTON WI 53563-9604
|
|
TOWN OF TURTLE
GUS Population: 2,392 (2024)
ID: 177680
|
Township | Municipal Government Within County |
Contact: TOWN OF TURTLE
6916 S COUNTY ROAD, BELOIT WI 53511-8909
|
|
GUS Population: 2,302 (2024)
ID: 177222
|
Municipal | Municipal Government Within County |
Contact: VILLAGE ADMINISTRATOR
301 CROSS ST, PO BOX 129, CLINTON WI 53525-0129
|
|
TOWN OF UNION
GUS Population: 2,105 (2024)
ID: 115263
|
Township | Municipal Government Within County |
Contact: CHAIRMAN
15531 W. GREEN BAY RD., EVANSVILLE WI 53536-9132
|
|
GUS Population: 1,598 (2024)
ID: 177225
|
Municipal | Municipal Government Within County |
Contact: CLERK TREASURER
PO BOX 409, ORFORDVILLE WI 53576-0409
|
|
TOWN OF NEWARK
GUS Population: 1,511 (2024)
ID: 177678
|
Township | Municipal Government Within County |
Contact: TOWN CHAIRMAN
11612 S SMYTHE SCHOOL RD, BELOIT WI 53511-9283
|
|
TOWN OF LIMA
GUS Population: 1,281 (2024)
ID: 115259
|
Township | Municipal Government Within County |
Contact: CLERK
9504 N DEMPSEY DR, WHITEWATER WI 53190-3257
|
|
GUS Population: 1,172 (2024)
ID: 115261
|
Township | Municipal Government Within County |
Contact: CLERK
8219 W HIGH ST, ORFORDVILLE WI 53576-8716
|
|
GUS Population: 1,042 (2024)
ID: 177674
|
Township | Municipal Government Within County |
Contact: CLERK
7416 W MINERAL POINT RD, JANESVILLE WI 53548-8768
|
|
TOWN OF BRADFORD
GUS Population: 1,000 (2024)
ID: 115257
|
Township | Municipal Government Within County |
Contact: TOWN CHAIR
3028 S. MARKET ST, P.O. BOX 32, AVALON WI 53505-9752
|
|
GUS Population: 977 (2024)
ID: 177679
|
Township | Municipal Government Within County |
Contact: CHM
10100 W STATE ROAD 59, EVANSVILLE WI 53536-8921
|
|
GUS Population: 899 (2024)
ID: 177223
|
Municipal | Municipal Government Within County |
Contact: CLERK
PO BOX 445, FOOTVILLE WI 53537-0445
|
|
TOWN OF CLINTON
GUS Population: 877 (2024)
ID: 115258
|
Township | Municipal Government Within County |
Contact: CLERK
9346 E STATE ROAD 67, CLINTON WI 53525-8423
|
|
TOWN OF LA PRAIRIE
GUS Population: 780 (2024)
ID: 209913
|
Township | Municipal Government Within County |
Contact: CLERK
3954 S NEVADA TRAIL, JANESVILLE WI 53546-8778
|
|
TOWN OF JOHNSTOWN
GUS Population: 766 (2024)
ID: 177676
|
Township | Municipal Government Within County |
Contact: TOWN CHAIR
11550 E COUNTY ROAD A, AVALON WI 53505-9707
|
|
TOWN OF MAGNOLIA
GUS Population: 743 (2024)
ID: 115260
|
Township | Municipal Government Within County |
Contact: CHAIR
15346 W TOWNSEND RD, BRODHEAD WI 53520-9060
|
|
TOWN OF SPRING VALLEY
GUS Population: 723 (2024)
ID: 209914
|
Township | Municipal Government Within County |
Contact: TOWN CHAIR
4526 S HOLDEN RD, ORFORDVILLE WI 53576-9755
|
|
TOWN OF AVON
GUS Population: 574 (2024)
ID: 136762
|
Township | Municipal Government Within County |
Contact: AVON TOWN CLERK
15444 W SKINNER ROAD, BRODHEAD WI 53520-8963
|