United States › Illinois › Oswego CITY
Oswego Illinois · 39,948 residents (2025 est.) · 15.2 sq mi
Time machine
COMPARE TO 1990 Census 2000 Census 2009 ACS 2010 ACS 2011 ACS 2012 ACS 2013 ACS 2014 ACS 2015 ACS 2016 ACS 2017 ACS 2018 ACS 2019 ACS 2020 ACS 2021 ACS 2022 ACS 2023 ACS
The short version
With 36,375 people, Oswego is a city in Illinois. Since 2000 the city has more than doubled, up 23,049 people. Owners hold 88% of the housing stock. Households here earn about 48% more than in Illinois as a whole. Few US cities rank higher on income. Households take in $123,792 a year at the median, 50% more than the country as a whole.
At a glance
Wealthier
above the US median
US median: $82,259
Mid-age
median age 38.7
US median: 38.9
More educated
44% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01
Population & growth from 13,326 in 2000
39,948 in 2025 (Census Bureau estimate)
2,393 / sq mi
+39%since 2009
from 1,716 / sq mi in 2009
US average: 281
from 32.7 in 2000
US average: 38.9
Population, 1990 – 2024
626 10K 20K 30K 40K 1990 2000 2010 2020 2024 Oswego Age distribution, 2024
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $123,792
−5%inflation adjusted, since 2000
from $71,502 in 2000
US average: $82,259
from $27,204 in 2000
US average: $44,673
Households earning $100K+
from 62.5% in 2009
US average: 53.3%
from 2.8% in 2000
US average: 12.5%
from 0.320 in 2010
US average: 0.476
Workforce by industry, 2024
Public administration 6.6%
Professional, scientific, technical 4.3%
Transportation & warehousing 4.2%
Arts, entertainment, food 2.8%
Education & health services 2.5%
Agriculture, forestry, fishing 0.2%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
$344,500
+11%inflation adjusted, since 2000
from $170,800 in 2000
US average: $376,019
$1,860
+39%inflation adjusted, since 2000
from $737 in 2000
US average: $1,442
from 92.3% in 2000
12.1% rent
from 5.7% in 2009
US average: 10.0%
from 3.26 people in 2009
US average: 2.54
from 35.9% in 2009
US average: 22.9%
from 43.9% in 2009
US average: 47.4%
from 3.1 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04
Race & ethnicity 2000
White, non-Hispanic 90.6%(12,079)
2024
White, non-Hispanic 62.4%(22,713)
Hispanic / Latino 17.9%(6,507)
from 48 in 2009
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins
Detailed origins & ancestry Hispanic origin
+ 1 more hispanic origin group with data Ancestry
+ 28 more ancestry groups with data from 33.5% in 2000
US average: 35.6%
High school or higher
from 93.5% in 2000
US average: 89.6%
from 10.7% in 2000
US average: 14.0%
Section 06
Commute & transportation from 25.2 min in 2000
US average: 26.5
from 84.0% in 2009
US average: 68.9%
from 6.4% in 2009
US average: 8.5%
from 4.5% in 2009
US average: 3.2%
from 3.7% in 2009
US average: 15.0%
from 0.5% in 2009
US average: 2.4%
from 0.6% in 2009
US average: 0.4%
from 1.6% in 2009
US average: 8.3%
Section 07
Work & employment from 6.0% in 2011
US average: 5.2%
from 76.5% in 2011
US average: 63.5%
Women 20-64 in the labor force
from 75.5% in 2020
US average: 74.6%
from 12.4% in 2009
US average: 13.1%
from 43.3% in 2009
US average: 42.5%
Section 08
People & community from 7.1% in 2009
US average: 14.1%
from 8.2% in 2009
US average: 6.2%
from 5.4% in 2012
US average: 13.3%
from 5.4% in 2013
US average: 8.4%
from 97.3% in 2017
US average: 91.0%
Computer in household
from 97.9% in 2020
US average: 95.5%
from 88.9% in 2020
US average: 87.7%
from 84.2% in 2016
US average: 77.7%
from 10.4% in 2016
US average: 13.6%
Marital status
Women 15+
Never married 32.5%(4,901)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 5.4% in 2013
US average: 8.4%
from 74.6% in 2020
US average: 54.8%
Direct-purchase
from 12.2% in 2020
US average: 13.8%
from 10.5% in 2020
US average: 18.4%
from 9.1% in 2020
US average: 20.9%
VA health care
from 1.2% in 2020
US average: 2.2%
Any private
from 84.7% in 2020
US average: 67.1%
Any public
from 19.5% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 35.6%(447)
Gulf War (1990s) 34.9%(438)
Share of the 1,255 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Drill deeper
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Frequently asked
How many people live in Oswego, Illinois? Oswego, Illinois has about 36,375 residents according to the 2024 American Community Survey.
What is the median household income in Oswego, Illinois? The typical household in Oswego, Illinois earns about $123,792 a year. Half of households make more than that, and half make less.
Is Oswego, Illinois expensive? In Oswego, Illinois, the median home is worth about $344,500, and the typical rent is about $1,860 a month.
How educated are people in Oswego, Illinois? About 44.3% of adults age 25 and over in Oswego, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Oswego, Illinois? About 2.6% of people in Oswego, Illinois live below the federal poverty line.
Has Oswego, Illinois grown since 1990? Yes, Oswego, Illinois has grown since 1990. The population has added about 32,499 residents, a change of about 838 percent over that period.
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