Oswego Population

1850–2026

17,039

2026 projection

0.8% since 2020 (increase)

05K10K15K20K25K186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual 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.
202617,039+150.09%
202517,024+530.31%
202416,971+60.04%
202316,965-650.38%
202217,030-730.43%
202117,103+1931.14%
202016,910-3391.97%
201917,249-910.52%
201817,340-1220.70%
201717,462-1150.65%

Showing 10 of 33 years.

Oswego Demographics

35.7median age

Median age

Female37.2 yrs
Male34.4 yrs

Adults

13,308
3,119 seniors · 23%10,189 other adults

Sex

Female 50.8% · 8,652Male 49.2% · 8,381

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 170 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

$53,172median household income

Median household income

$53,172

Half of households earn more, half earn less

Median earnings

$41,617

Typical yearly pay for a worker 25 or older.

Poverty rate

20.6%

About 1 in 5 residents

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

Oswego Marital Status

38% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married38%39%37%
Never married41%47%35%
Divorced12%11%14%
Widowed7%3%11%
Separated2%<1%3%

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