City in La Crosse County, Wisconsin · 10.6 sq mi · 1,937 people per sq mi
About 21,000 people live in Onalaska. The typical household earns $85,867, and the median resident is 40.7 years old.
2026 projection
From 18,858 in 2020
Poverty rate 6.05%
Men 39.1 · Women 42.8
1880–2026
20,550
2026 projection
9% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1880–2026
20,550
2026 projection
9% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 20,550 | +253 | 1.25% |
|---|---|---|---|
| 2025 | 20,297 | +424 | 2.13% |
| 2024 | 19,873 | +281 | 1.43% |
| 2023 | 19,592 | +243 | 1.26% |
| 2022 | 19,349 | +335 | 1.76% |
| 2021 | 19,014 | +156 | 0.83% |
| 2020 | 18,858 | -98 | 0.52% |
| 2019 | 18,956 | +265 | 1.42% |
| 2018 | 18,691 | +17 | 0.09% |
| 2017 | 18,674 | +53 | 0.28% |
Showing 10 of 30 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 193 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 17 residents
51% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 51% | 53% | 49% |
| Never married | 32% | 36% | 27% |
| Divorced | 9% | 6% | 12% |
| Widowed | 8% | 3% | 12% |
| Separated | 1% | 2% | <1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau