Onaga is a city located in Pottawatomie County, Kansas. Onaga has a 2025 population of 681 . Onaga is currently declining at a rate of 0% annually and its population has increased by 0.15% since the most recent census, which recorded a population of 680 in 2020.
The average household income in Onaga is $60,995 with a poverty rate of 12.91%. The median age in Onaga is 58.3 years: 57.3 years for males, and 61.4 years for females. For every 100 females there are 86.8 males.
Data after 2023 is projected based on recent change
The racial composition of Onaga includes 93.24% White, 3.09% Asian, and smaller percentages for Two or more races, Native American and multiracial populations.
White (93.24%)
Asian (3.09%)
Two or more races (2.79%)
Native American (0.88%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 634 | 93.24% |
| Asian | 21 | 3.09% |
| Two or more races | 19 | 2.79% |
| Native American | 6 | 0.88% |
Married
Widowed
Divorced
Separated
Never Married
Onaga's average per capita income is $49,432. Household income levels show a median of $46,042. The poverty rate stands at 12.91%.
Name | Median | Mean |
|---|---|---|
| Married Families | $95,667 | - |
| Families | $93,750 | $95,152 |
| Households | $46,042 | $60,995 |
| Non Families | $24,000 | $31,169 |
Average Income
Median Household Income
Poverty Rate