Jefferson County, Wisconsin
Jefferson 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: 86,245 (2024)
ID: 177064
|
County | Official County Government |
Contact: CHAIRPERSON
311 S CENTER AVE, JEFFERSON WI 53549-1799
|
|
GUS Population: 22,617 (2024)
ID: 177159
|
Municipal | Municipal Government Within County |
Contact: CITY CLERK
PO BOX 477, WATERTOWN WI 53094-0477
|
|
GUS Population: 12,377 (2024)
ID: 177158
|
Municipal | Municipal Government Within County |
Contact: CITY MANAGER
101 N MAIN ST, FORT ATKINSON WI 53538-1861
|
|
GUS Population: 7,766 (2024)
ID: 202816
|
Municipal | Municipal Government Within County |
Contact: DEPUTY CLERK/TREASURER
317 S MAIN ST, JEFFERSON WI 53549-1772
|
|
GUS Population: 6,617 (2024)
ID: 209795
|
Municipal | Municipal Government Within County |
Contact: TREASURER/FINANCE DIRECTOR
200 D WATER ST, LAKE MILLS WI 53551-1632
|
|
GUS Population: 5,067 (2024)
ID: 136689
|
Township | Municipal Government Within County |
Contact: CLERK
W1195 MARIETTA AVE, IXONIA WI 53036-9748
|
|
GUS Population: 3,769 (2024)
ID: 194248
|
Township | Municipal Government Within County |
Contact: CLERK
W5609 STAR SCHOOL RD, FORT ATKINSON WI 53538-9359
|
|
CITY OF WATERLOO
GUS Population: 3,611 (2024)
ID: 194221
|
Municipal | Municipal Government Within County |
Contact: CLERK TREASURER
136 N MONROE ST, WATERLOO WI 53594-1125
|
|
GUS Population: 3,398 (2024)
ID: 136552
|
Municipal | Municipal Government Within County |
Contact: VILLAGE PRESIDENT
PO BOX 238, JOHNSON CREEK WI 53038-0238
|
|
TOWN OF OAKLAND
GUS Population: 3,220 (2024)
ID: 115206
|
Township | Municipal Government Within County |
Contact: DEPUTY CLERK TREASURER
N4450 COUNTY ROAD A, CAMBRIDGE WI 53523-9014
|
|
TOWN OF SULLIVAN
GUS Population: 2,308 (2024)
ID: 191863
|
Township | Municipal Government Within County |
Contact: TOWN CLERK
N3866 WEST ST, SULLIVAN WI 53178-9621
|
|
GUS Population: 2,204 (2024)
ID: 177499
|
Township | Municipal Government Within County |
Contact: TOWN CHAIR
1111 S MAIN ST, LAKE MILLS WI 53551-1816
|
|
TOWN OF JEFFERSON
GUS Population: 2,054 (2024)
ID: 209884
|
Township | Municipal Government Within County |
Contact: CLERK
W7002 COUNTY ROAD J, JEFFERSON WI 53549-9427
|
|
GUS Population: 1,961 (2024)
ID: 136688
|
Township | Municipal Government Within County |
Contact: TOWN CHAIRPERSON
N6240 STONEWOOD DR, WATERTOWN WI 53094-9740
|
|
GUS Population: 1,940 (2024)
ID: 177502
|
Township | Municipal Government Within County |
Contact: TOWN OF WATERTOWN
W2725 ROCK RIVER PARADISE, WATERTOWN WI 53094-8716
|
|
GUS Population: 1,719 (2024)
ID: 209796
|
Municipal | Municipal Government Within County |
Contact: VILLAGE CLERK
PO BOX 380, PALMYRA WI 53156-0380
|
|
TOWN OF FARMINGTON
GUS Population: 1,395 (2024)
ID: 177498
|
Township | Municipal Government Within County |
Contact: CHAIRMAN
N6297 COUNTY ROAD P, HELENVILLE WI 53137-9584
|
|
TOWN OF AZTALAN
GUS Population: 1,364 (2024)
ID: 177496
|
Township | Municipal Government Within County |
Contact: CHAIRMAN
W 6260 COUNTY RD B, JEFFERSON WI 53549-9694
|
|
TOWN OF PALMYRA
GUS Population: 1,210 (2024)
ID: 177500
|
Township | Municipal Government Within County |
Contact: CLERK TREASURER
PO BOX 519, PALMYRA WI 53156-0519
|
|
TOWN OF MILFORD
GUS Population: 1,097 (2024)
ID: 136690
|
Township | Municipal Government Within County |
Contact: TOWN CLERK
N7389 COUNTY ROAD A, JOHNSON CREEK WI 53038-9737
|
|
TOWN OF HEBRON
GUS Population: 1,044 (2024)
ID: 115205
|
Township | Municipal Government Within County |
Contact: TOWN CLERK
N1986 FROMMADER RD, FORT ATKINSON WI 53538-9689
|
|
TOWN OF WATERLOO
GUS Population: 873 (2024)
ID: 209885
|
Township | Municipal Government Within County |
Contact: TOWN CHAIRMAN
N8565 COUNTY ROAD O, WATERLOO WI 53594-9403
|
|
GUS Population: 824 (2024)
ID: 177501
|
Township | Municipal Government Within County |
Contact: TOWN OF SUMNER CLERK
N1525 CHURCH ST, EDGERTON WI 53534-9119
|
|
GUS Population: 730 (2024)
ID: 177497
|
Township | Municipal Government Within County |
Contact: TOWN CHAIRMAN
N426 WOODWARD RD, WHITEWATER WI 53190-3005
|
|
VILLAGE OF SULLIVAN
GUS Population: 653 (2024)
ID: 115072
|
Municipal | Municipal Government Within County |
Contact: PRESIDENT
PO BOX 6, SULLIVAN WI 53178
|