Oswego Population

2010–2026

1,612

2026 projection

3.4% since 2020 (decrease)

05001K1.5K2K201020122014201620182020202220242026

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.

Population by year

Population estimates for Oswego. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20261,612-90.56%
20251,62100.00%
20241,621-110.67%
20231,632+40.25%
20221,628-150.91%
20211,643-251.50%
20201,668-90.54%
20191,677-231.35%
20181,700-241.39%
20171,724-160.92%

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.

Growth since 2020, compared

Oswego has a population change higher than Labette County, and lower than Kansas and the U.S.

  • United States+3.1%
  • Kansas+1.3%
  • Oswego−2.0%
  • Labette County−2.4%

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.

Oswego Demographics

36.2median age

Median age

Female34.8 yrs
Male38.5 yrs

Adults

1,444
338 seniors (65+) · 23% of adults1,106 other adults

Sex

Female 51.7% · 1,001Male 48.3% · 936

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 19 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

Oswego Income

$53,750median household income

Median household income

$53,750

Half of households earn more, half earn less

Median earnings

$34,353

Typical yearly pay for a worker 25 or older.

Poverty rate

22.8%

About 1 in 4 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Oswego Marital Status

35% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married35%36%34%
Never married35%40%30%
Divorced17%18%17%
Widowed9%5%13%
Separated4%2%6%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201