Osage County's estimated 2025 population is 16,062 with a growth rate of 0.75% in the past year according to the most recent United States census data. Osage County is the 31st largest county in Kansas. The 2010 population was 16,274 and has seen a growth of -1.3% since that time.
Data after 2023 is projected based on recent change
The racial composition of Osage County includes 93.65% White, and smaller percentages for other race, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 14,778 | 93.65% |
| Two or more races | 795 | 5.04% |
| Other race | 85 | 0.54% |
| Black or African American | 79 | 0.5% |
| Native American | 21 | 0.13% |
| Asian | 20 | 0.13% |
| Native Hawaiian or Pacific Islander | 2 | 0.01% |
Married
Widowed
Divorced
Separated
Never Married
Osage County's average per capita income is $44,932. Household income levels show a median of $70,216. The poverty rate stands at 11%.
Name | Median | Mean |
|---|---|---|
| Married Families | $93,948 | - |
| Families | $84,759 | $94,527 |
| Households | $70,216 | $81,759 |
| Non Families | $40,587 | $49,405 |
Average Income
Median Household Income
Poverty Rate
