Marion County, Illinois

14 cities & places have their primary county here.

Population: 37,294
Median household income: $60,839
Median home value: $100,100

Home to 37,294 residents, Marion County is one of Illinois's counties. 14 cities and places have their primary county here. Its median household income of $60,839 runs below the Illinois figure of $81,702.

Between 2019 and 2023, Marion County's population declined 1.2% from 37,743 to 37,294, while its median household income rose 28.0% from $47,519 to $60,839.

The median resident is 41.3 years old. The largest age group is 5 to 17, 17.2% of residents.

Demographics

ACS 2019–2023

Population: 37,294
Median age: 41.3 yrs
Median household income: $60,839
Median home value: $100,100
Median gross rent: $771
Housing units: 17,379
Homeownership rate: 74.5%
Bachelor's degree or higher: 17.3%
Unemployment rate: 6.4%

Trends

ACS 5-year · 2019–2023

Population

37,74337,294

Median household income

$47,519$60,839

Median home value

$77,900$100,100

Median gross rent

$646$771

Year	Population	Median household income	Median home value	Median gross rent
2019	37,743	$47,519	$77,900	$646
2020	37,524	$49,925	$81,600	$639
2021	37,781	$53,209	$83,700	$684
2022	37,543	$59,099	$96,200	$734
2023	37,294	$60,839	$100,100	$771

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

Age distribution

Under 56.4%

5 to 1717.2%

18 to 247.1%

25 to 3411.9%

35 to 4412.0%

45 to 5411.6%

55 to 6414.0%

65 to 7411.7%

75 and over8.1%

	Count	Share
Under 5	2,370	6.4%
5 to 17	6,430	17.2%
18 to 24	2,652	7.1%
25 to 34	4,444	11.9%
35 to 44	4,477	12.0%
45 to 54	4,318	11.6%
55 to 64	5,205	14.0%
65 to 74	4,378	11.7%
75 and over	3,020	8.1%

Race & ethnicity

	Count	Share
White (non-Hispanic)	33,408	89.6%
Black or African American	1,551	4.2%
American Indian & Alaska Native	6	0.0%
Asian	251	0.7%
Native Hawaiian & Pacific Islander	7	0.0%
Some other race	240	0.6%
Two or more races	1,033	2.8%
Hispanic or Latino (any race)	798	2.1%

Educational attainment (age 25+)

No high school diploma9.7%

High school graduate36.1%

Some college or associate's36.9%

Bachelor's degree11.8%

Graduate or professional degree5.5%

	Count	Share
No high school diploma	2,496	9.7%
High school graduate	9,332	36.1%
Some college or associate's	9,546	36.9%
Bachelor's degree	3,056	11.8%
Graduate or professional degree	1,412	5.5%

Commute to work

Mean travel time to work: 20 min

Drove alone82.7%

Carpooled9.7%

Public transit0.2%

Walked1.5%

Bicycle0.3%

Worked from home5.1%

Other means0.6%

How workers get to work

	Count	Share
Drove alone	13,311	82.7%
Carpooled	1,560	9.7%
Public transit	30	0.2%
Walked	240	1.5%
Bicycle	49	0.3%
Worked from home	815	5.1%
Other means	98	0.6%

Travel time

	Count	Share
Under 15 min	7,255	47.5%
15 to 29 min	4,377	28.6%
30 to 44 min	2,212	14.5%
45 to 59 min	638	4.2%
60+ min	806	5.3%

Households

Average household size: 2.36
Poverty rate: 16.2% (5,841 of 36,135)

	Count	Share
Family households	9,510	61.5%
Nonfamily households	5,955	38.5%

Housing

Median year structure built: 1973

Occupancy

	Count	Share
Occupied	15,465	89.0%
Vacant	1,914	11.0%

Tenure (of occupied units)

	Count	Share
Owner-occupied	11,514	74.5%
Renter-occupied	3,951	25.5%

1-unit, detached70.8%

1-unit, attached0.5%

2 to 4 units5.2%

5 to 19 units4.1%

20 or more units1.9%

Mobile home & other17.4%

Units in structure

	Count	Share
1-unit, detached	12,312	70.8%
1-unit, attached	84	0.5%
2 to 4 units	908	5.2%
5 to 19 units	714	4.1%
20 or more units	332	1.9%
Mobile home & other	3,029	17.4%

Geography

County GEOID: 17121
State: Illinois
Land area: 573 sq mi
Water area: 3.57 sq mi
Center point: 38.6482, -88.9204

Cities & places

Compare with nearby counties

Other counties in Illinois

101