COUNTY · 1990 CENSUS

Marion County

Iowa · 30,001 residents · 554.49 sq mi

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The short version

Marion County has roughly average household income, with a median household income of $27,991. Population has declined 6% since 2000. 13% of adults hold a bachelor's degree or higher, below the national rate of 20%. Median home value is $48,800.

At a glance

Lower income

below the US median

US median: $30,130

Mid-age

median age 34.0

US median: 33.0

Less educated

13% hold a bachelor's degree

US average: 20%

More affordable

home values down 26%, inflation adjusted

US median home: $93,722

Section 01

Population & growth

Total population

30,001

−6%vs 2000

vs 32,052 in 2000

1990 – 2025

Population density

54 / sq mi

−6%vs 2000

vs 58 / sq mi in 2000

US average: 221

Median age

34.0

−9%vs 2000

vs 37.2 in 2000

US average: 33.0

Population, 1990 – 2024

202434K

Section 02

Income & economy

Median household income

$27,991

−13%inflation adjusted, since 2000

vs $42,401 in 2000

US average: $30,130

1990 – 2024

Per capita income

$11,945

−36%vs 2000

vs $18,717 in 2000

US average: $14,340

Poverty rate

10.0%

+2.4 ptsvs 2000

vs 7.6% in 2000

US average: 13.2%

Section 03

Housing

Median home value

$48,800

−26%inflation adjusted, since 2000

vs $87,100 in 2000

US average: $93,722

1990 – 2024

Median gross rent

$323

−10%inflation adjusted, since 2000

vs $472 in 2000

US average: $450

Owner-occupied

73.9%

−1.7 ptsvs 2000

vs 75.6% in 2000

26.1% rent

Afford Score

1.7

−15%vs 2000

vs 2.1 in 2000

1990 – 2024

RELATED:See current rent listings in Marion County on RentDataNow

Section 04

Race & ethnicity

2000

White, non-Hispanic96.9%(31,074)

Black0.4%(129)

Hispanic / Latino0.8%(257)

Asian1%(330)

Other0%

Diversity Score5.5%(1,777)

1990

White, non-Hispanic98.8%(29,632)

Black0.2%(65)

Hispanic / Latino0.6%(186)

Asian0.8%(241)

Other0.2%(63)

Diversity Score4.5%(1,362)

Diversity Score

−18%vs 2000

vs 6 in 2000

1990 – 2024

Section 05

Education

Bachelor's degree or higher

12.9%

−6.0 ptsvs 2000

vs 18.9% in 2000

US average: 20.3%

High school or higher

73.7%

−10.3 ptsvs 2000

vs 84.0% in 2000

US average: 75.2%

Graduate degree

3.5%

−2.0 ptsvs 2000

vs 5.4% in 2000

US average: 7.1%

Section 06

Commute & transportation

Average commute

21.7 min

+40%vs 2000

vs 15.6 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

Mahaska County

Income$70,940+153%

Home value$157,800+223%

Population21,880−36%

SEE FULL COMPARISON →

MARION COUNTY VS

Monroe County

Income$70,996+154%

Home value$156,300+220%

Population7,406−78%

SEE FULL COMPARISON →

MARION COUNTY VS

Lucas County

Income$61,793+121%

Home value$120,200+146%

Population8,847−74%

SEE FULL COMPARISON →

MARION COUNTY VS

Jasper County

Income$71,311+155%

Home value$186,300+282%

Population38,153+12%

SEE FULL COMPARISON →

Frequently asked

How many people live in Marion County, Iowa?

Marion County, Iowa has about 30,001 residents according to the 1990 Census.

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

The typical household in Marion County, Iowa earns about $27,991 a year. Half of households make more than that, and half make less.

Is Marion County, Iowa expensive?

In Marion County, Iowa, the median home is worth about $48,800, and the typical rent is about $323 a month.

How educated are people in Marion County, Iowa?

About 12.9% of adults age 25 and over in Marion County, Iowa hold a bachelor's degree or higher.

What is the poverty rate in Marion County, Iowa?

About 10.0% of people in Marion County, Iowa 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 →