City in Jefferson County, Kansas · 1 sq mi · 1,059 people per sq mi
1,052 people live in Oskaloosa. The typical household earns $83,750, and the median resident is 38.9 years old.
2026 projection
From 1,110 in 2020
Poverty rate 5.66%
Men 37.9 · Women 40.4
2010–2026
1,052
2026 projection
5.2% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
2010–2026
1,052
2026 projection
5.2% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 1,052 | -8 | 0.75% |
|---|---|---|---|
| 2025 | 1,060 | -7 | 0.66% |
| 2024 | 1,067 | -7 | 0.65% |
| 2023 | 1,074 | -7 | 0.65% |
| 2022 | 1,081 | -13 | 1.19% |
| 2021 | 1,094 | -16 | 1.44% |
| 2020 | 1,110 | +7 | 0.63% |
| 2019 | 1,103 | +9 | 0.82% |
| 2018 | 1,094 | -3 | 0.27% |
| 2017 | 1,097 | +2 | 0.18% |
Showing 10 of 17 years.
The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.
Oskaloosa has a population change lower than Jefferson County, Kansas, and the U.S.
Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.
Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 11 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 18 residents
49% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 49% | 52% | 46% |
| Never married | 27% | 28% | 27% |
| Divorced | 13% | 12% | 15% |
| Widowed | 9% | 6% | 12% |
| Separated | 1% | 2% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources