How many people live in Watonwan County, MN?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 11,200 people living in Watonwan County, MN. That makes Watonwan County the 65th-most populous county in Minnesota. It is home to 0.19% of people living in the state.
11.2K
population of Watonwan County, MN (2024)
0.19%
County share of the Minnesota population (2024)
About 11,200 people lived in Watonwan County, MN in 2024.
Population estimates, 2000–2024
What are Watonwan County, MN’s age demographics?
About 2,400 Watonwan County residents are aged 65 and older in 2024. That represents 21% of its population. For comparison, the age group represents 18.3% of Minnesota’s population and 18% in the US overall.
Another 3,100 Watonwan County residents, or 27.2% of the population, were children under 18. For comparison, the age group represents 22.4% of Minnesota’s population and 21.6% in the US overall.
A higher share of Watonwan County, MN's population is aged under 18 than the US as a whole.
Population estimates by age group, (2024)
What are Watonwan County, MN’s racial and ethnic demographics?
Non-Hispanic white residents make up 64.5% of the Watonwan County population, higher than the national share of 57.5%. Watonwan County also has a larger share of people identifying as Hispanic (32.5%) than the US overall (20%).
In contrast, Watonwan County’s non-Hispanic Black or African American population accounts for 0.73%, below the 12.6% nationwide, and the non-Hispanic Asian population makes up 1.1% of the county, compared with 6.5% 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.
Watonwan County, MN has a higher share of a Hispanic population than Minnesota as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Watonwan County, MN is St. James with about 4,800 residents in 2024.
Cities and towns in Watonwan County, MN ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | St. James | 4,750 |
| 2. | Madelia | 2,430 |
| 3. | Butterfield | 597 |
| 4. | Long Lake | 337 |
| 5. | Madelia | 302 |
| 6. | Riverdale | 285 |
| 7. | Rosendale | 270 |
| 8. | Antrim | 265 |
| 9. | South Branch | 252 |
| 10. | Nelson | 236 |
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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.
