How many people live in Otter Tail County, MN?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 60,900 people living in Otter Tail County, MN. That makes Otter Tail County the 17th-most populous county in Minnesota. It is home to 1% of people living in the state.
60.9K
population of Otter Tail County, MN (2024)
1%
County share of the Minnesota population (2024)
About 60,900 people lived in Otter Tail County, MN in 2024.
Population estimates, 2000–2024
What are Otter Tail County, MN’s age demographics?
About 16,200 Otter Tail County residents are aged 65 and older in 2024. That represents 26.6% of its population. For comparison, the age group represents 18.3% of Minnesota’s population and 18% in the US overall.
Another 13,100 Otter Tail County residents, or 21.6% 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 Otter Tail County, MN's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Otter Tail County, MN’s racial and ethnic demographics?
Non-Hispanic white residents make up 91.4% of the Otter Tail County, MN population, higher than the national share of 57.5%.
In contrast, Otter Tail County’s Hispanic population accounts for 4.4%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 1.5% 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.
Otter Tail County, MN has a higher share of a non-Hispanic white population than Minnesota as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Otter Tail County, MN is Fergus Falls with about 14,300 residents in 2024.
Cities and towns in Otter Tail County, MN ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Fergus Falls | 14,258 |
| 2. | Perham | 3,708 |
| 3. | Pelican Rapids | 2,594 |
| 4. | Aurdal | 1,552 |
| 5. | New York Mills | 1,481 |
| 6. | Perham | 1,057 |
| 7. | Rush Lake | 1,057 |
| 8. | Parkers Prairie | 1,029 |
| 9. | Dunn | 929 |
| 10. | Battle Lake | 914 |
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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.
