How many people live in Sauk County, WI?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 66,500 people living in Sauk County, WI. That makes Sauk County the 25th-most populous county in Wisconsin. It is home to 1.1% of people living in the state.
66.5K
population of Sauk County, WI (2024)
1.1%
County share of the Wisconsin population (2024)
About 66,500 people lived in Sauk County, WI in 2024.
Population estimates, 2000–2024
What are Sauk County, WI’s age demographics?
About 14,000 Sauk County, WI residents are aged 65 and older in 2024. That represents 21% of its population. For comparison, the age group represents 19.6% of Wisconsin’s population and 18% in the US overall.
Another 14,600 Sauk County residents, or 22% 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 Sauk County, WI's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Sauk County, WI’s racial and ethnic demographics?
Non-Hispanic white residents make up 88.1% of the Sauk County, WI population, higher than the national share of 57.5%. Sauk County, WI also has a larger share of people identifying as non-Hispanic American Indian and Alaska Native (1.1%) than the US overall (0.72%).
In contrast, Sauk County’s Hispanic population accounts for 7.6%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 1.3% 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.
Sauk 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 Sauk County, WI is Baraboo with about 13,100 residents in 2024.
Cities and towns in Sauk County, WI ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Baraboo | 13,096 |
| 2. | Reedsburg | 10,314 |
| 3. | Prairie du Sac | 4,358 |
| 4. | Sauk City | 3,471 |
| 5. | Lake Delton | 3,466 |
| 6. | Delton | 2,457 |
| 7. | Dellona | 1,920 |
| 8. | Spring Green | 1,824 |
| 9. | Baraboo | 1,788 |
| 10. | Excelsior | 1,615 |
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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.
