Osage County's estimated 2026 population is 15,640 with a growth rate of -0.34% in the past year according to the most recent United States census data. Osage County is the 33rd largest county in Kansas. The 2010 population was 16,274 and has seen a growth of -3.9% since that time.
Data after 2023 is projected based on recent change
Overall: 42.9 years
Female: 44.1 years
Male: 42.1 years
There are 12,119 adults, (3,288 of whom are seniors) in Osage County.
Female: 7,724 (49.1%)
Male: 8,020 (50.9%)
The racial composition of Osage County includes 92.73% White, and smaller percentages for other race, Native American, Black or African American, Asian and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 14,600 | 92.73% |
| Two or more races | 909 | 5.77% |
| Other race | 122 | 0.77% |
| Native American | 46 | 0.29% |
| Black or African American | 44 | 0.28% |
| Asian | 23 | 0.15% |
Osage County's average per capita income is $48,180. Household income levels show a median of $74,467. The poverty rate stands at 9.71%.
Name | Median | Mean |
|---|---|---|
| Married Families | $98,221 | - |
| Families | $91,179 | $101,084 |
| Households | $74,467 | $85,289 |
| Non Families | $40,984 | $49,815 |
Average Income
Median Household Income
Poverty Rate
