How many people live in Osceola County, IA?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 6,000 people living in Osceola County, IA. That makes Osceola County the 95th-most populous county in Iowa. It is home to 0.19% of people living in the state.
6.04K
population of Osceola County, IA (2024)
0.19%
County share of the Iowa population (2024)
About 6,000 people lived in Osceola County, IA in 2024.
Population estimates, 2000–2024
What are Osceola County, IA’s age demographics?
About 1,500 Osceola County residents are aged 65 and older in 2024. That represents 24.3% of its population. For comparison, the age group represents 18.9% of Iowa’s population and 18% in the US overall.
Another 1,300 Osceola County residents, or 21.7% of the population, were children under 18. For comparison, the age group represents 22.5% of Iowa’s population and 21.6% in the US overall.
A higher share of Osceola County, IA's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Osceola County, IA’s racial and ethnic demographics?
Non-Hispanic white residents make up 83.7% of the Osceola County, IA population, higher than the national share of 57.5%. Osceola County, IA also has a larger share of people identifying as non-Hispanic Native Hawaiian and other Pacific Islander (1%) than the US overall (0.2%).
In contrast, Osceola County’s non-Hispanic Black or African American population accounts for 1%, below the 12.6% nationwide, and the Hispanic population makes up 11.5% of the county, compared with 20% 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.
Osceola County, IA has a higher share of a Hispanic population than Iowa as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Osceola County, IA is Sibley with about 2,800 residents in 2024.
Cities and towns in Osceola County, IA ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Sibley | 2,787 |
| 2. | Ashton | 434 |
| 3. | Ocheyedan | 424 |
| 4. | Melvin | 196 |
| 5. | Harris | 145 |
| 6. | Balance of Osceola County | 2,050 |
Keep exploring
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.
