Trempealeau County's estimated 2026 population is 31,414 with a growth rate of 0.78% in the past year according to the most recent United States census data. Trempealeau County is the 43rd largest county in Wisconsin. The 2010 population was 28,846 and has seen a growth of 8.9% since that time.
Data after 2023 is projected based on recent change
Overall: 39.9 years
Female: 39.8 years
Male: 40 years
There are 22,618 adults, (5,758 of whom are seniors) in Trempealeau County.
Female: 15,113 (49%)
Male: 15,726 (51%)
The racial composition of Trempealeau County includes 84.92% White, 8.46% other race, and smaller percentages for Native American, Asian, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 26,190 | 84.92% |
| Other race | 2,609 | 8.46% |
| Two or more races | 1,372 | 4.45% |
| Native American | 346 | 1.12% |
| Asian | 142 | 0.46% |
| Black or African American | 107 | 0.35% |
| Native Hawaiian or Pacific Islander | 73 | 0.24% |
Trempealeau County's average per capita income is $50,338. Household income levels show a median of $76,313. The poverty rate stands at 9.92%.
Name | Median | Mean |
|---|---|---|
| Married Families | $106,909 | $122,851 |
| Families | $95,531 | $110,261 |
| Households | $76,313 | $92,199 |
| Non Families | $47,271 | $55,144 |
Average Income
Median Household Income
Poverty Rate
