COUNTY · 1990 CENSUS

Stephenson County

Illinois · 48,052 residents · 564.247 sq mi

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The short version

Stephenson County has roughly average household income, with a median household income of $28,340. Population has held roughly steady since 2000. Median home value is $50,500.

At a glance

Lower income

below the US median

US median: $30,130

Older

median age 35.0

US median: 33.0

Less educated

14% hold a bachelor's degree

US average: 20%

More affordable

home values down 17%, inflation adjusted

US median home: $93,722

Section 01

Population & growth

Total population

48,052

−2%vs 2000

vs 48,979 in 2000

1990 – 2025

Population density

85 / sq mi

−2%vs 2000

vs 87 / sq mi in 2000

US average: 221

Median age

35.0

−9%vs 2000

vs 38.5 in 2000

US average: 33.0

Population, 1990 – 2024

202444K

Section 02

Income & economy

Median household income

$28,340

−8%inflation adjusted, since 2000

vs $40,366 in 2000

US average: $30,130

1990 – 2024

Per capita income

$13,156

−34%vs 2000

vs $19,794 in 2000

US average: $14,340

Poverty rate

9.9%

+1.0 ptsvs 2000

vs 9.0% in 2000

US average: 13.2%

Section 03

Housing

Median home value

$50,500

−17%inflation adjusted, since 2000

vs $80,400 in 2000

US average: $93,722

1990 – 2024

Median gross rent

$321

−2%inflation adjusted, since 2000

vs $433 in 2000

US average: $450

Owner-occupied

71.2%

−3.6 ptsvs 2000

vs 74.8% in 2000

28.8% rent

Afford Score

1.8

−11%vs 2000

vs 2.0 in 2000

1990 – 2024

RELATED:See current rent listings in Stephenson County on RentDataNow

Section 04

Race & ethnicity

2000

White, non-Hispanic88.6%(43,404)

Black7.6%(3,732)

Hispanic / Latino1.5%(747)

Asian0.7%(332)

Other0%

Diversity Score22.9%(11,224)

1990

White, non-Hispanic92.8%(44,588)

Black6.3%(3,047)

Hispanic / Latino0.7%(328)

Asian0.6%(292)

Other0.3%(125)

Diversity Score18.3%(8,803)

Diversity Score

−20%vs 2000

vs 23 in 2000

1990 – 2024

Section 05

Education

Bachelor's degree or higher

13.6%

−2.0 ptsvs 2000

vs 15.6% in 2000

US average: 20.3%

High school or higher

76.7%

−7.4 ptsvs 2000

vs 84.1% in 2000

US average: 75.2%

Graduate degree

3.9%

−1.1 ptsvs 2000

vs 5.0% in 2000

US average: 7.1%

Section 06

Commute & transportation

Average commute

21.8 min

+58%vs 2000

vs 13.8 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.

Drill deeper

Places similar to Stephenson County

Head to head

Compare Stephenson County to nearby counties

STEPHENSON COUNTY VS

Green County

Income$82,852+192%

Home value$250,200+395%

Population37,227−14%

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STEPHENSON COUNTY VS

Carroll County

Income$60,758+114%

Home value$114,500+127%

Population15,419−64%

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STEPHENSON COUNTY VS

Winnebago County

Income$65,837+132%

Home value$164,500+226%

Population283,674+556%

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STEPHENSON COUNTY VS

Ogle County

Income$82,132+190%

Home value$189,200+275%

Population51,399+19%

SEE FULL COMPARISON →

Frequently asked

How many people live in Stephenson County, Illinois?

Stephenson County, Illinois has about 48,052 residents according to the 1990 Census.

What is the median household income in Stephenson County, Illinois?

The typical household in Stephenson County, Illinois earns about $28,340 a year. Half of households make more than that, and half make less.

Is Stephenson County, Illinois expensive?

In Stephenson County, Illinois, the median home is worth about $50,500, and the typical rent is about $321 a month.

How educated are people in Stephenson County, Illinois?

About 13.6% of adults age 25 and over in Stephenson County, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Stephenson County, Illinois?

About 9.9% of people in Stephenson County, Illinois live below the federal poverty line.

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

How we source and harmonize this data →