Columbia County's estimated 2026 population is 58,441 with a growth rate of 0.28% in the past year according to the most recent United States census data. Columbia County is the 26th largest county in Wisconsin. The 2010 population was 56,854 and has seen a growth of 2.79% since that time.
Data after 2023 is projected based on recent change
The racial composition of Columbia County includes 92.06% White, and smaller percentages for Black or African American, other race, Asian, Native American and multiracial populations.
White (92.06%)
Two or more races (3.93%)
Black or African American (1.88%)
Other race (0.9%)
Asian (0.77%)
Native American (0.46%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 53,691 | 92.06% |
| Two or more races | 2,294 | 3.93% |
| Black or African American | 1,094 | 1.88% |
| Other race | 524 | 0.9% |
| Asian | 449 | 0.77% |
| Native American | 270 | 0.46% |
Married
Widowed
Divorced
Separated
Never Married
Columbia County's average per capita income is $53,596. Household income levels show a median of $82,792. The poverty rate stands at 7.81%.
Name | Median | Mean |
|---|---|---|
| Married Families | $112,763 | $128,021 |
| Families | $98,242 | $116,573 |
| Households | $82,792 | $98,820 |
| Non Families | $48,253 | $58,601 |
Average Income
Median Household Income
Poverty Rate
