COUNTY · 1990 CENSUS

Marion County

Illinois · 41,561 residents · 572.538 sq mi

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The short version

Marion County has lower-than-average household income, with a median household income of $22,813. Population has held roughly steady since 2000. 10% of adults hold a bachelor's degree or higher, below the national rate of 20%. Median home value is $35,000. Households here earn about 29% less than the Illinois median.

At a glance

Lower income

below the US median

US median: $30,130

Older

median age 35.1

US median: 33.0

Less educated

10% hold a bachelor's degree

US average: 20%

More affordable

home values down 14%, inflation adjusted

US median home: $93,722

Section 01

Population & growth

Total population

41,561

Unchangedvs 2000

vs 41,691 in 2000

1990 – 2025

Population density

73 / sq mi

Unchangedvs 2000

vs 73 / sq mi in 2000

US average: 221

Median age

35.1

−9%vs 2000

vs 38.4 in 2000

US average: 33.0

Population, 1990 – 2024

202437K

Section 02

Income & economy

Median household income

$22,813

−15%inflation adjusted, since 2000

vs $35,227 in 2000

US average: $30,130

1990 – 2024

Per capita income

$11,500

−33%vs 2000

vs $17,235 in 2000

US average: $14,340

Poverty rate

16.4%

+5.1 ptsvs 2000

vs 11.3% in 2000

US average: 13.2%

Section 03

Housing

Median home value

$35,000

−14%inflation adjusted, since 2000

vs $53,500 in 2000

US average: $93,722

1990 – 2024

Median gross rent

$295

+5%inflation adjusted, since 2000

vs $371 in 2000

US average: $450

Owner-occupied

76.2%

−0.4 ptsvs 2000

vs 76.6% in 2000

23.8% rent

Afford Score

1.5

+1%vs 2000

vs 1.5 in 2000

1990 – 2024

RELATED:See current rent listings in Marion County on RentDataNow

Section 04

Race & ethnicity

2000

White, non-Hispanic93.4%(38,951)

Black3.8%(1,593)

Hispanic / Latino0.9%(378)

Asian0.6%(235)

Other0%

Diversity Score12.8%(5,353)

1990

White, non-Hispanic94.8%(39,417)

Black3.5%(1,462)

Hispanic / Latino0.5%(207)

Asian1.1%(452)

Other0.6%(230)

Diversity Score13.5%(5,611)

Diversity Score

+5%vs 2000

vs 13 in 2000

1990 – 2024

Section 05

Education

Bachelor's degree or higher

9.6%

−2.5 ptsvs 2000

vs 12.1% in 2000

US average: 20.3%

High school or higher

70.1%

−9.0 ptsvs 2000

vs 79.1% in 2000

US average: 75.2%

Graduate degree

3.3%

−0.8 ptsvs 2000

vs 4.1% in 2000

US average: 7.1%

Section 06

Commute & transportation

Average commute

17.8 min

+30%vs 2000

vs 13.7 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 Marion County

Head to head

Compare Marion County to nearby counties

MARION COUNTY VS

Jefferson County

Income$63,118+177%

Home value$126,000+260%

Population36,147−1%

SEE FULL COMPARISON →

MARION COUNTY VS

Clay County

Income$60,417+165%

Home value$97,400+178%

Population12,793−65%

SEE FULL COMPARISON →

MARION COUNTY VS

Fayette County

Income$60,944+167%

Home value$130,700+273%

Population20,790−43%

SEE FULL COMPARISON →

MARION COUNTY VS

Clinton County

Income$86,588+280%

Home value$192,400+450%

Population37,128+2%

SEE FULL COMPARISON →

Frequently asked

How many people live in Marion County, Illinois?

Marion County, Illinois has about 41,561 residents according to the 1990 Census.

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

The typical household in Marion County, Illinois earns about $22,813 a year. Half of households make more than that, and half make less.

Is Marion County, Illinois expensive?

In Marion County, Illinois, the median home is worth about $35,000, and the typical rent is about $295 a month.

How educated are people in Marion County, Illinois?

About 9.6% of adults age 25 and over in Marion County, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Marion County, Illinois?

About 16.4% of people in Marion 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 →