Oswego is located in Labette County, Kansas. Oswego has a 2025 population of 337 . It is also the county seat of Labette County . Oswego is currently declining at a rate of -0.59% annually and its population has decreased by -1.46% since the most recent census, which recorded a population of 342 in 2020.
The average household income in Oswego is $187,503 with a poverty rate of 6.09%. The median age in Oswego is 29.7 years: 31.1 years for males, and 29.6 years for females. For every 100 females there are 111.7 males.
Data after 2023 is projected based on recent change
The racial composition of Oswego includes 95.36% White, and smaller percentages for Native American, other race, Two or more races and multiracial populations.
White (95.36%)
Native American (2.9%)
Other race (0.87%)
Two or more races (0.87%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 329 | 95.36% |
| Native American | 10 | 2.9% |
| Other race | 3 | 0.87% |
| Two or more races | 3 | 0.87% |
Married
Widowed
Divorced
Separated
Never Married
Oswego's average per capita income is $61,583. Household income levels show a median of $133,125. The poverty rate stands at 6.09%.
Name | Median | Mean |
|---|---|---|
| Households | $133,125 | $187,503 |
| Non Families | $21,979 | $29,605 |
| Families | - | $230,361 |
| Married Families | - | - |
Average Income
Median Household Income
Poverty Rate