Ottawa County's 2026 population is estimated at 30,580, reflecting a 0.29% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Ottawa County is the 31st largest county in Oklahoma. The 2010 population was 31,860 and has grown -4.02% since 2010.
Data after 2023 is projected based on recent change
Overall: 37.2 years
Female: 38.5 years
Male: 35.8 years
There are 22,681 adults, (5,500 of whom are seniors) in Ottawa County.
Female: 15,371 (50.7%)
Male: 14,970 (49.3%)
The racial composition of Ottawa County includes 63.24% White, 18.83% Native American, 3.1% other race, and smaller percentages for Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 19,188 | 63.24% |
| Native American | 5,712 | 18.83% |
| Two or more races | 3,676 | 12.12% |
| Other race | 940 | 3.1% |
| Black or African American | 343 | 1.13% |
| Asian | 255 | 0.84% |
| Native Hawaiian or Pacific Islander | 227 | 0.75% |
Ottawa County 's average per capita income is $38,918. Household income levels show a median of $49,947. The poverty rate stands at 20.87%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $73,927 | $88,934 |
| Families | $61,444 | $75,566 |
| Households | $49,947 | $63,907 |
| Non Families | $28,354 | $38,674 |
Average Income
Median Household Income
Poverty Rate
