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CITY · 1990 CENSUS

Oswego

Illinois · 3,876 residents · 15.198 sq mi
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The short version

Oswego is significantly wealthier than the US average, with a median household income of $43,889. Population has fallen 71% since 2000, a loss of 9,450 residents. Median home value is $112,900. Poverty is rare here, at 0.2% of residents. Households here earn about 36% more than the Illinois median.

At a glance
Wealthier
above the US median
US median: $30,130
Older
median age 35.8
US median: 33.0
Average education
22% hold a bachelor's degree
US average: 20%
More affordable
home values down 13%, inflation adjusted
US median home: $93,722
Section 01

Population & growth

3,876
−71%vs 2000
vs 13,326 in 2000
1990 – 2025
255 / sq mi
−71%vs 2000
vs 877 / sq mi in 2000
US average: 221
35.8
+10%vs 2000
vs 32.7 in 2000
US average: 33.0
Population, 19902024
62610K20K30K40K1990201020202024Oswego
202436K
1990201020202024
Section 02

Income & economy

$43,889
−19%inflation adjusted, since 2000
vs $71,502 in 2000
US average: $30,130
1990 – 2024
$18,784
−31%vs 2000
vs $27,204 in 2000
US average: $14,340
0.2%
−2.6 ptsvs 2000
vs 2.8% in 2000
US average: 13.2%
Section 03

Housing

$112,900
−13%inflation adjusted, since 2000
vs $170,800 in 2000
US average: $93,722
1990 – 2024
$542
−3%inflation adjusted, since 2000
vs $737 in 2000
US average: $450
81.8%
−10.5 ptsvs 2000
vs 92.3% in 2000
18.2% rent
2.6
+8%vs 2000
vs 2.4 in 2000
1990 – 2024
RELATED:See current rent listings in Oswego on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic90.6%(12,079)
Black1.8%(236)
Hispanic / Latino5%(665)
Asian1.4%(183)
Other0%
Diversity Score19.4%(2,580)
1990
White, non-Hispanic99.3%(3,848)
Black0%(0)
Hispanic / Latino1.2%(45)
Asian0.3%(11)
Other0.4%(17)
Diversity Score4.6%(178)
5
−76%vs 2000
vs 19 in 2000
1990 – 2024
Section 05

Education

21.7%
−11.9 ptsvs 2000
vs 33.5% in 2000
US average: 20.3%
High school or higher
85.2%
−8.3 ptsvs 2000
vs 93.5% in 2000
US average: 75.2%
4.7%
−6.0 ptsvs 2000
vs 10.7% in 2000
US average: 7.1%
Section 06

Commute & transportation

23.2 min
−8%vs 2000
vs 25.2 min in 2000
US average: 21.9
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

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Frequently asked

How many people live in Oswego, Illinois?

Oswego, Illinois has about 3,876 residents according to the 1990 Census.

What is the median household income in Oswego, Illinois?

The typical household in Oswego, Illinois earns about $43,889 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 $112,900, and the typical rent is about $542 a month.

How educated are people in Oswego, Illinois?

About 21.7% 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 0.2% of people in Oswego, Illinois live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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