Ottawa County's estimated 2025 population is 5,842 with a growth rate of 0.21% in the past year according to the most recent United States census data. Ottawa County is the 57th largest county in Kansas. The 2010 population was 6,097 and has seen a growth of -4.18% since that time.
Data after 2023 is projected based on recent change
The racial composition of Ottawa County includes 93.65% White, and smaller percentages for other race, Black or African American, Native American, Asian and multiracial populations.
White (93.7%)
Two or more races (4.1%)
Other race (1.1%)
Black or African American (0.7%)
Native American (0.5%)
Asian (0.1%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 5,415 | 93.65% |
| Two or more races | 236 | 4.08% |
| Other race | 61 | 1.05% |
| Black or African American | 40 | 0.69% |
| Native American | 27 | 0.47% |
| Asian | 3 | 0.05% |
Married
Widowed
Divorced
Separated
Never Married
Ottawa County's average per capita income is $46,382. Household income levels show a median of $76,755. The poverty rate stands at 12.12%.
Name | Median | Mean |
|---|---|---|
| Married Families | $98,011 | - |
| Families | $88,857 | $101,210 |
| Households | $76,755 | $89,408 |
| Non Families | $35,250 | $50,273 |
Average Income
Median Household Income
Poverty Rate