How many people live in Osage County, KS?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 15,700 people living in Osage County, KS. That makes Osage County the 32nd-most populous county in Kansas. It is home to 0.53% of people living in the state.
15.7K
population of Osage County, KS (2024)
0.53%
County share of the Kansas population (2024)
About 15,700 people lived in Osage County, KS in 2024.
Population estimates, 2000–2024
What are Osage County, KS’s age demographics?
About 3,500 Osage County, KS residents are aged 65 and older in 2024. That represents 22.2% of its population. For comparison, the age group represents 17.9% of Kansas's population and 18% in the US overall.
Another 3,500 Osage County residents, or 22.3% of the population, were children under 18. For comparison, the age group represents 23.5% of Kansas’s population and 21.6% in the US overall.
A lower share of Osage County, KS's population is aged 25–44 than the US as a whole.
Population estimates by age group, (2024)
What are Osage County, KS’s racial and ethnic demographics?
Non-Hispanic white residents make up 92.5% of the Osage County, KS population, higher than the national share of 57.5%.
In contrast, Osage County’s Hispanic population accounts for 3.7%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 0.85% 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.
Osage County, KS has a higher share of a non-Hispanic white population than Kansas as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Osage County, KS is Osage City with about 2,800 residents in 2024.
Cities and towns in Osage County, KS ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Osage City | 2,799 |
| 2. | Carbondale | 1,306 |
| 3. | Junction | 1,228 |
| 4. | Lyndon | 1,037 |
| 5. | Overbrook | 998 |
| 6. | Burlingame | 939 |
| 7. | Scranton | 641 |
| 8. | Fairfax | 624 |
| 9. | Melvern | 345 |
| 10. | Grant | 305 |
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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.
