Trempealeau County's estimated 2025 population is 30,915 with a growth rate of 0.03% 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 7.17% since that time.
Data after 2023 is projected based on recent change
The racial composition of Trempealeau County includes 87.78% White, 6.93% other race, and smaller percentages for Native American, Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
White
Other race
Two or more races
Native American
Black or African American
Asian
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 27,024 | 87.78% |
| Other race | 2,135 | 6.93% |
| Two or more races | 1,068 | 3.47% |
| Native American | 216 | 0.7% |
| Black or African American | 154 | 0.5% |
| Asian | 126 | 0.41% |
| Native Hawaiian or Pacific Islander | 63 | 0.2% |
Married
Widowed
Divorced
Separated
Never Married
Trempealeau County's average per capita income is $48,233. Household income levels show a median of $71,295. The poverty rate stands at 8.47%.
Name | Median | Mean |
|---|---|---|
| Married Families | $99,626 | $117,130 |
| Families | $90,464 | $106,891 |
| Households | $71,295 | $89,298 |
| Non Families | $44,086 | $53,199 |
Average Income
Median Household Income
Poverty Rate
