How many people live in Polk County, WI?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 45,800 people living in Polk County, WI. That makes Polk County the 33rd-most populous county in Wisconsin. It is home to 0.77% of people living in the state.
45.8K
population of Polk County, WI (2024)
0.77%
County share of the Wisconsin population (2024)
About 45,800 people lived in Polk County, WI in 2024.
Population estimates, 2000–2024
What are Polk County, WI’s age demographics?
About 11,000 Polk County, WI residents are aged 65 and older in 2024. That represents 24.1% of its population. For comparison, the age group represents 19.6% of Wisconsin’s population and 18% in the US overall.
Another 8,800 Polk County residents, or 19.3% of the population, were children under 18. For comparison, the age group represents 20.8% of Wisconsin’s population and 21.6% in the US overall.
A higher share of Polk County, WI's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Polk County, WI’s racial and ethnic demographics?
Non-Hispanic white residents make up 94.1% of the Polk County, WI population, higher than the national share of 57.5%. Polk County, WI also has a larger share of people identifying as non-Hispanic American Indian and Alaska Native (1%) than the US overall (0.72%).
In contrast, Polk County’s Hispanic population accounts for 2.3%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 0.46% of the county, compared with 12.6% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Polk County, WI has a higher share of a non-Hispanic white population than Wisconsin as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Polk County, WI is Osceola with about 3,100 residents in 2024.
Cities and towns in Polk County, WI ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Osceola | 3,132 |
| 2. | Alden | 3,015 |
| 3. | Amery | 2,934 |
| 4. | Osceola | 2,880 |
| 5. | St. Croix Falls | 2,310 |
| 6. | Lincoln | 2,144 |
| 7. | Farmington | 2,013 |
| 8. | Garfield | 1,775 |
| 9. | Eureka | 1,768 |
| 10. | Black Brook | 1,465 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
