Jefferson County, Illinois

10 cities & places have their primary county here.

Population: 36,808
Median household income: $61,102
Median home value: $118,400

Jefferson County, Illinois counts 36,808 residents. 10 cities and places have their primary county here. The median household income of $61,102 is below the Illinois median ($81,702).

From 2019 to 2023, Jefferson County's population declined 3.1% from 37,985 to 36,808, while its median household income rose 22.5% from $49,896 to $61,102.

14.2% of residents live below the poverty line. Households average 2.38 people.

Demographics

ACS 2019–2023

Population: 36,808
Median age: 41.1 yrs
Median household income: $61,102
Median home value: $118,400
Median gross rent: $862
Housing units: 16,650
Homeownership rate: 71.9%
Bachelor's degree or higher: 18.4%
Unemployment rate: 6.6%

Trends

ACS 5-year · 2019–2023

Population

37,98536,808

Median household income

$49,896$61,102

Median home value

$96,700$118,400

Median gross rent

$701$862

Year	Population	Median household income	Median home value	Median gross rent
2019	37,985	$49,896	$96,700	$701
2020	37,774	$51,662	$97,100	$717
2021	37,362	$54,692	$102,200	$753
2022	37,043	$58,384	$115,000	$838
2023	36,808	$61,102	$118,400	$862

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

Age distribution

Under 55.8%

5 to 1716.6%

18 to 247.3%

25 to 3412.1%

35 to 4412.5%

45 to 5412.4%

55 to 6413.5%

65 to 7411.6%

75 and over8.1%

	Count	Share
Under 5	2,141	5.8%
5 to 17	6,122	16.6%
18 to 24	2,703	7.3%
25 to 34	4,453	12.1%
35 to 44	4,607	12.5%
45 to 54	4,548	12.4%
55 to 64	4,973	13.5%
65 to 74	4,282	11.6%
75 and over	2,979	8.1%

Race & ethnicity

	Count	Share
White (non-Hispanic)	31,012	84.3%
Black or African American	2,274	6.2%
American Indian & Alaska Native	60	0.2%
Asian	343	0.9%
Native Hawaiian & Pacific Islander	8	0.0%
Some other race	80	0.2%
Two or more races	2,028	5.5%
Hispanic or Latino (any race)	1,003	2.7%

Educational attainment (age 25+)

No high school diploma8.6%

High school graduate32.7%

Some college or associate's40.3%

Bachelor's degree11.6%

Graduate or professional degree6.8%

	Count	Share
No high school diploma	2,228	8.6%
High school graduate	8,453	32.7%
Some college or associate's	10,413	40.3%
Bachelor's degree	2,996	11.6%
Graduate or professional degree	1,752	6.8%

Commute to work

Mean travel time to work: 20 min

Drove alone82.3%

Carpooled10.3%

Public transit0.3%

Walked1.1%

Bicycle0.0%

Worked from home4.8%

Other means1.3%

How workers get to work

	Count	Share
Drove alone	12,955	82.3%
Carpooled	1,615	10.3%
Public transit	40	0.3%
Walked	166	1.1%
Bicycle	4	0.0%
Worked from home	759	4.8%
Other means	200	1.3%

Travel time

	Count	Share
Under 15 min	6,196	41.4%
15 to 29 min	5,615	37.5%
30 to 44 min	1,996	13.3%
45 to 59 min	514	3.4%
60+ min	659	4.4%

Households

Average household size: 2.38
Poverty rate: 14.2% (4,975 of 35,127)

	Count	Share
Family households	9,669	65.3%
Nonfamily households	5,136	34.7%

Housing

Median year structure built: 1977

Occupancy

	Count	Share
Occupied	14,805	88.9%
Vacant	1,845	11.1%

Tenure (of occupied units)

	Count	Share
Owner-occupied	10,638	71.9%
Renter-occupied	4,167	28.1%

1-unit, detached69.7%

1-unit, attached0.6%

2 to 4 units4.4%

5 to 19 units5.5%

20 or more units2.5%

Mobile home & other17.3%

Units in structure

	Count	Share
1-unit, detached	11,603	69.7%
1-unit, attached	102	0.6%
2 to 4 units	735	4.4%
5 to 19 units	915	5.5%
20 or more units	422	2.5%
Mobile home & other	2,873	17.3%

Geography

County GEOID: 17081
State: Illinois
Land area: 571 sq mi
Water area: 13 sq mi
Center point: 38.3008, -88.9242

Cities & places

Compare with nearby counties

Other counties in Illinois

101