Stephenson County, Illinois

13 cities & places have their primary county here.

Population: 44,042
Median household income: $61,943
Median home value: $127,500

Stephenson County is a county in Illinois with a population of 44,042. 13 cities and places have their primary county here. At $61,943, its median household income sits below Illinois's $81,702.

From 2019 to 2023, Stephenson County's population declined 2.3% from 45,093 to 44,042, while its median household income rose 26.9% from $48,805 to $61,943.

The largest age group is 5 to 17, 16.1% of residents. White (non-Hispanic) residents are the largest group, 80.0% of the population.

Demographics

ACS 2019–2023

Population: 44,042
Median age: 45.2 yrs
Median household income: $61,943
Median home value: $127,500
Median gross rent: $764
Housing units: 21,375
Homeownership rate: 71.0%
Bachelor's degree or higher: 21.7%
Unemployment rate: 4.7%

Trends

ACS 5-year · 2019–2023

Population

45,09344,042

Median household income

$48,805$61,943

Median home value

$97,800$127,500

Median gross rent

$651$764

Year	Population	Median household income	Median home value	Median gross rent
2019	45,093	$48,805	$97,800	$651
2020	44,683	$50,466	$99,600	$671
2021	44,817	$53,806	$103,900	$696
2022	44,482	$57,527	$122,000	$755
2023	44,042	$61,943	$127,500	$764

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 55.3%

5 to 1716.1%

18 to 247.4%

25 to 3410.2%

35 to 4410.9%

45 to 5411.4%

55 to 6414.8%

65 to 7413.8%

75 and over10.2%

	Count	Share
Under 5	2,314	5.3%
5 to 17	7,081	16.1%
18 to 24	3,242	7.4%
25 to 34	4,499	10.2%
35 to 44	4,817	10.9%
45 to 54	5,036	11.4%
55 to 64	6,510	14.8%
65 to 74	6,071	13.8%
75 and over	4,472	10.2%

Race & ethnicity

	Count	Share
White (non-Hispanic)	35,218	80.0%
Black or African American	3,714	8.4%
American Indian & Alaska Native	20	0.0%
Asian	355	0.8%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	55	0.1%
Two or more races	2,345	5.3%
Hispanic or Latino (any race)	2,335	5.3%

Educational attainment (age 25+)

No high school diploma8.5%

High school graduate32.0%

Some college or associate's37.8%

Bachelor's degree14.1%

Graduate or professional degree7.6%

	Count	Share
No high school diploma	2,677	8.5%
High school graduate	10,039	32.0%
Some college or associate's	11,864	37.8%
Bachelor's degree	4,425	14.1%
Graduate or professional degree	2,400	7.6%

Commute to work

Mean travel time to work: 21 min

Drove alone77.2%

Carpooled8.1%

Public transit0.7%

Walked2.6%

Bicycle0.1%

Worked from home10.2%

Other means1.1%

How workers get to work

	Count	Share
Drove alone	15,644	77.2%
Carpooled	1,633	8.1%
Public transit	146	0.7%
Walked	527	2.6%
Bicycle	26	0.1%
Worked from home	2,071	10.2%
Other means	222	1.1%

Travel time

	Count	Share
Under 15 min	8,718	47.9%
15 to 29 min	4,755	26.1%
30 to 44 min	2,416	13.3%
45 to 59 min	1,252	6.9%
60+ min	1,057	5.8%

Households

Average household size: 2.22
Poverty rate: 13.1% (5,683 of 43,295)

	Count	Share
Family households	12,068	62.0%
Nonfamily households	7,401	38.0%

Housing

Median year structure built: 1959

Occupancy

	Count	Share
Occupied	19,469	91.1%
Vacant	1,906	8.9%

Tenure (of occupied units)

	Count	Share
Owner-occupied	13,824	71.0%
Renter-occupied	5,645	29.0%

1-unit, detached75.8%

1-unit, attached3.8%

2 to 4 units7.5%

5 to 19 units5.5%

20 or more units4.3%

Mobile home & other3.2%

Units in structure

	Count	Share
1-unit, detached	16,193	75.8%
1-unit, attached	805	3.8%
2 to 4 units	1,609	7.5%
5 to 19 units	1,173	5.5%
20 or more units	916	4.3%
Mobile home & other	679	3.2%

Geography

County GEOID: 17177
State: Illinois
Land area: 564 sq mi
Water area: 0.52 sq mi
Center point: 42.3497, -89.6660

Cities & places

Compare with nearby counties

Other counties in Illinois

101