Lake Mills city, Wisconsin
Official LSAD Designation: Lake Mills city • Census GEOID: 5541675
• Jefferson County
Lake Mills city is an incorporated city in Jefferson County, Wisconsin. According to official records from the Census (2025), Lake Mills city had an estimated population of 6,655 residents. Official Census Bureau geographic records classify this community under LSAD designation Lake Mills city (GEOID 5541675).
Local Government Administration U.S. Census Bureau GMAF
City Of Lake Mills
Municipal
Official Title:
Treasurer/finance Director
Address:
200 D WATER ST, LAKE MILLS WI 53551-1632
County Of Jefferson
County
Official Title:
Chairperson
Address:
311 S CENTER AVE, JEFFERSON WI 53549-1799
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 6,655 | 2025 |
| Median Household Income | $91,027 | 2020-2024 |
| Median Home Value | $317,100 | 2020-2024 |
| Land Area | 4.19 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).