Onalaska is a city located in La Crosse County, Wisconsin. Onalaska has a 2026 population of 20,413. Onalaska is currently growing at a rate of 1.28% annually and its population has increased by 8.19% since the most recent census, which recorded a population of 18,867 in 2020.
The median household income in Onalaska is $85,867 with a poverty rate of 6.05%. The median age in Onalaska is 40.7 years: 39.1 years for males, and 42.8 years for females. For every 100 females there are 91.1 males.
Data after 2023 is projected based on recent change
Overall: 40.7 years
Female: 42.8 years
Male: 39.1 years
There are 15,604 adults, (3,955 of whom are seniors) in Onalaska.
Female: 10,124 (52.3%)
Male: 9,224 (47.7%)
The racial composition of Onalaska includes 85.78% White, 5.33% Asian, and smaller percentages for Black or African American, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 16,597 | 85.78% |
| Asian | 1,032 | 5.33% |
| Two or more races | 785 | 4.06% |
| Black or African American | 527 | 2.72% |
| Other race | 243 | 1.26% |
| Native American | 143 | 0.74% |
| Native Hawaiian or Pacific Islander | 21 | 0.11% |
Onalaska 's average per capita income is $58,157. Household income levels show a median of $85,867. The poverty rate stands at 6.05%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $132,955 | - |
| Families | $112,348 | $148,216 |
| Households | $85,867 | $116,237 |
| Non Families | $54,398 | $67,806 |
Average Income
Median Household Income
Poverty Rate