Lake Mills is a city located in Jefferson County, Wisconsin. Lake Mills has a 2025 population of 6,705 . Lake Mills is currently growing at a rate of 1.33% annually and its population has increased by 7.02% since the most recent census, which recorded a population of 6,265 in 2020.
The average household income in Lake Mills is $97,253 with a poverty rate of 4.86%. The median age in Lake Mills is 40.2 years: 40.1 years for males, and 40.3 years for females. For every 100 females there are 107.3 males.
Data after 2023 is projected based on recent change
The racial composition of Lake Mills includes 89.16% White, and smaller percentages for Native American, other race, Black or African American, Asian and multiracial populations.
White (89.16%)
Two or more races (6.34%)
Native American (1.56%)
Other race (1.38%)
Black or African American (1.08%)
Asian (0.49%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 5,698 | 89.16% |
| Two or more races | 405 | 6.34% |
| Native American | 100 | 1.56% |
| Other race | 88 | 1.38% |
| Black or African American | 69 | 1.08% |
| Asian | 31 | 0.49% |
Married
Widowed
Divorced
Separated
Never Married
Lake Mills' average per capita income is $57,680. Household income levels show a median of $87,039. The poverty rate stands at 4.86%.
Name | Median | Mean |
|---|---|---|
| Married Families | $121,570 | - |
| Families | $112,632 | $117,511 |
| Households | $87,039 | $97,253 |
| Non Families | $58,264 | $60,773 |
Average Income
Median Household Income
Poverty Rate