Columbia County, Wisconsin Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 26th-largest in Wisconsin
The population of Columbia County, Wisconsin is 58,322 as of the 2023 American Community Survey, making it the 26th-largest county in Wisconsin. The median household income is $82,792, the median home value is $258,700, and the median age is 43.3.
The population of Columbia County has grown 2.2% since 2010 (56,854 → 58,113), a +0.16% annualized rate.
58,322
Population
+0.16%
Annual growth
76
People / sq mi
$82,792
Median Income
$258,700
Median Home Value
Columbia County covers 766 sq mi of land at 76.2 people per square mile.
About Columbia County, WI
Columbia County is a county in Wisconsin with a population of 58,322. It ranks #26 among counties in Wisconsin by population. The median age is 43.3, older than the national median. The population is 51.5% male and 48.5% female.
The median household income in Columbia County is $82,792, above the US median of $74,580. 5.2% of residents live below the federal poverty level. Home values sit at a median of $258,700, with monthly rent averaging $926. The homeownership rate of 76.9% is higher than the national rate of 64.8%.
Educational attainment in Columbia County reflects 25.7% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 11.3% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 26.6 minutes each way.
Columbia County Population History (2010-2024)
The county of Columbia County had a population of 56,854 in 2010 and 58,113 in 2024, a 2.2% growth over 14 years. The peak was 58,520 in 2020. Average annual growth rate: 0.16%.
58,113
Population (2024)
56,854
Population (2010)
58,520
Peak (2020)
0.16%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 56,854 |
| 2011 | 56,712 |
| 2012 | 56,476 |
| 2013 | 56,577 |
| 2014 | 56,645 |
| 2015 | 56,683 |
| 2016 | 56,907 |
| 2017 | 57,267 |
| 2018 | 57,275 |
| 2019 | 57,537 |
| 2020 | 58,520 |
| 2021 | 58,440 |
| 2022 | 58,337 |
| 2023 | 57,949 |
| 2024 | 58,113 |
Race & Ethnicity
| White | 92.1% |
| Black or African American | 1.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.3% |
| Two or More Races | 0.0% |
Age & Sex
43.3
Median Age
48.5%
Female
51.5%
Male
19.1%
Age 65+
Age Distribution
Children (under 15): 16.7% · Seniors (65+): 19.1%
Income & Poverty
| Median household income | $82,792+$7,122 vs state |
| Mean household income | $98,820 |
| Per-capita income | $41,515 |
| Poverty rate | 5.2%-1.4% vs state |
| Unemployment rate | 2.0% |
| Employment-to-population | 63.4% |
Top Industries by Employment
The largest employment sector in Columbia County is professional & business services, accounting for 20.7% of workers.
How residents commute
0.1%
Drive alone
2.3%
Carpool
77.9%
Public transit
11.3%
Work from home
26.6 min
Avg commute
Housing
$258,700+$11,300 vs state
Median home value
$926
Median rent
76.9%
Homeownership rate
26,826
Total housing units
90.3%
Occupied
9.7%
Vacant
23.1%
Renter-occupied
Social & access
95.4%
With health insurance
92.9%
With broadband internet
18.1%
Foreign-born
7.8%
Veterans (18+)
11.8%
With a disability
95.8%
Speak language other than English at home
Education
93.8%
High School+
25.7%
Bachelor's+
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County rankings
Frequently Asked Questions
Columbia County, Wisconsin has a population of 58,322 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 26th-largest county in Wisconsin. Population density is 76 people per square mile.
The population of Columbia County has grown 2.2% since 2010 (56,854 → 58,113), a +0.16% annualized rate.
The median household income in Columbia County, Wisconsin is $82,792, with mean (average) household income of $98,820 and per-capita income of $41,515. 5.2% of residents live below the federal poverty level.
In Columbia County, the largest racial and ethnic groups are White (92.1%), Black or African American (1.9%), Hispanic or Latino (1.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Columbia County, Wisconsin is 43.3 years. Residents are 48.5% female and 51.5% male.
The median home value in Columbia County is $258,700 and median monthly rent is $926. 76.9% of occupied housing units are owner-occupied. The county has 26,826 total housing units, 9.7% of which are vacant.
The largest employment sector in Columbia County, Wisconsin is professional, scientific, and management services, employing 20.7% of workers. The unemployment rate is 2.0%.
Milwaukee is among the largest cities associated with Columbia County, Wisconsin, with a population of 569,756.
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Population, race, income, age, and trends across Wisconsin
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.