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COUNTY · 2000 CENSUS

Stephenson County

Illinois · 48,979 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 $40,366. Population has held roughly steady since 1990. 16% of adults hold a bachelor's degree or higher, below the national rate of 24%. Median home value has risen by half since 1990, reaching $80,400.

At a glance
Lower income
below the US median
US median: $42,589
Older
median age 38.5
US median: 35.2
Less educated
16% hold a bachelor's degree
US average: 24%
Stable housing
home values roughly flat, inflation adjusted
US median home: $120,530
Section 01

Population & growth

Total population
48,979
+2%since 1990
from 48,052 in 1990
1990 – 2025
Population density
87 / sq mi
+2%since 1990
from 85 / sq mi in 1990
US average: 242
Median age
38.5
+10%since 1990
from 35.0 in 1990
US average: 35.2
Population, 1990 – 2024
43K45K46K48K50K1990201020202024Stephenson County
202444K
1990201020202024
Section 02

Income & economy

Median household income
$40,366
+8%inflation adjusted, since 1990
from $28,340 in 1990
US average: $42,589
1990 – 2024
Per capita income
$19,794
+50%since 1990
from $13,156 in 1990
US average: $21,522
Poverty rate
9.0%
−1.0 ptssince 1990
from 9.9% in 1990
US average: 12.4%
Section 03

Housing

Median home value
$80,400
+21%inflation adjusted, since 1990
from $50,500 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$433
+2%inflation adjusted, since 1990
from $321 in 1990
US average: $602
Owner-occupied
74.8%
+3.6 ptssince 1990
from 71.2% in 1990
25.2% rent
Afford Score
2.0
+12%since 1990
from 1.8 in 1990
1990 – 2024
RELATED:See current rent listings in Stephenson County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic92.8%(44,588)
Black6.3%(3,047)
Hispanic / Latino0.7%(328)
Asian0.6%(292)
Diversity Score18.3%(8,803)
2000
White, non-Hispanic88.6%(43,404)
Black7.6%(3,732)
Hispanic / Latino1.5%(747)
Asian0.7%(332)
Diversity Score22.9%(11,224)
Diversity Score
23
+25%since 1990
from 18 in 1990
1990 – 2024
Section 05

Education

Bachelor's degree or higher
15.6%
+2.0 ptssince 1990
from 13.6% in 1990
US average: 24.4%
High school or higher
84.1%
+7.4 ptssince 1990
from 76.7% in 1990
US average: 80.3%
Graduate degree
5.0%
+1.1 ptssince 1990
from 3.9% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
13.8 min
−37%since 1990
from 21.8 min in 1990
US average: 17.6
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

Latah County
Pop 41,842
Chilton County
Pop 47,708
Thomas County
Pop 46,368
Graham County
Pop 40,157
Places similar to Stephenson County
Head to head

Compare Stephenson County to nearby counties

STEPHENSON COUNTY VS
Green County
Income$82,852+105%
Home value$250,200+211%
Population37,227−14%
SEE FULL COMPARISON →
STEPHENSON COUNTY VS
Carroll County
Income$60,758+51%
Home value$114,500+42%
Population15,419−64%
SEE FULL COMPARISON →
STEPHENSON COUNTY VS
Winnebago County
Income$65,837+63%
Home value$164,500+105%
Population283,674+556%
SEE FULL COMPARISON →
STEPHENSON COUNTY VS
Ogle County
Income$82,132+103%
Home value$189,200+135%
Population51,399+19%
SEE FULL COMPARISON →
Frequently asked

How many people live in Stephenson County, Illinois?

Stephenson County, Illinois has about 48,979 residents according to the 2000 Census.

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

The typical household in Stephenson County, Illinois earns about $40,366 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 $80,400, and the typical rent is about $433 a month.

How educated are people in Stephenson County, Illinois?

About 15.6% 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 9.0% of people in Stephenson County, Illinois live below the federal poverty line.

Has Stephenson County, Illinois grown since 1990?

Yes, Stephenson County, Illinois has grown since 1990. The population has added about 927 residents, a change of about 2 percent over that period.

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13 census tracts
Census Tract 1Census Tract 10Census Tract 9Census Tract 12Census Tract 3Census Tract 13Census Tract 8Census Tract 11Census Tract 2Census Tract 5Census Tract 6Census Tract 4Census Tract 7
14 ZIP codes
ZIP 61032ZIP 61048ZIP 61019ZIP 61062ZIP 61060ZIP 61070ZIP 61018ZIP 61039ZIP 61013ZIP 61089ZIP 61067ZIP 61044ZIP 61050ZIP 61027
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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