COUNTY · 2000 CENSUS

Marion County

Iowa · 32,052 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 $42,401. Population has held roughly steady since 1990. Median home value has risen by half since 1990, reaching $87,100.

At a glance

Average income

near the US median

US median: $42,589

Mid-age

median age 37.2

US median: 35.2

Less educated

19% hold a bachelor's degree

US average: 24%

Less affordable

home values up 35%, inflation adjusted

US median home: $120,530

Section 01

Population & growth

Total population

32,052

+7%since 1990

from 30,001 in 1990

1990 – 2025

Population density

58 / sq mi

+7%since 1990

from 54 / sq mi in 1990

US average: 242

Median age

37.2

+9%since 1990

from 34.0 in 1990

US average: 35.2

Population, 1990 – 2024

202434K

Section 02

Income & economy

Median household income

$42,401

+15%inflation adjusted, since 1990

from $27,991 in 1990

US average: $42,589

1990 – 2024

Per capita income

$18,717

+57%since 1990

from $11,945 in 1990

US average: $21,522

Poverty rate

7.6%

−2.4 ptssince 1990

from 10.0% in 1990

US average: 12.4%

Section 03

Housing

Median home value

$87,100

+35%inflation adjusted, since 1990

from $48,800 in 1990

US average: $120,530

1990 – 2024

Median gross rent

$472

+11%inflation adjusted, since 1990

from $323 in 1990

US average: $602

Owner-occupied

75.6%

+1.7 ptssince 1990

from 73.9% in 1990

24.4% rent

Afford Score

2.1

+18%since 1990

from 1.7 in 1990

1990 – 2024

RELATED:See current rent listings in Marion County on RentDataNow

Section 04

Race & ethnicity

1990

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

Black0.2%(65)

Hispanic / Latino0.6%(186)

Asian0.8%(241)

Diversity Score4.5%(1,362)

2000

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

Black0.4%(129)

Hispanic / Latino0.8%(257)

Asian1%(330)

Diversity Score5.5%(1,777)

Diversity Score

+22%since 1990

from 5 in 1990

1990 – 2024

Section 05

Education

Bachelor's degree or higher

18.9%

+6.0 ptssince 1990

from 12.9% in 1990

US average: 24.4%

High school or higher

84.0%

+10.3 ptssince 1990

from 73.7% in 1990

US average: 80.3%

Graduate degree

5.4%

+2.0 ptssince 1990

from 3.5% in 1990

US average: 8.8%

Section 06

Commute & transportation

Average commute

15.6 min

−28%since 1990

from 21.7 min in 1990

US average: 17.6

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+67%

Home value$157,800+81%

Population21,880−36%

SEE FULL COMPARISON →

MARION COUNTY VS

Monroe County

Income$70,996+67%

Home value$156,300+79%

Population7,406−78%

SEE FULL COMPARISON →

MARION COUNTY VS

Lucas County

Income$61,793+46%

Home value$120,200+38%

Population8,847−74%

SEE FULL COMPARISON →

MARION COUNTY VS

Jasper County

Income$71,311+68%

Home value$186,300+114%

Population38,153+12%

SEE FULL COMPARISON →

Frequently asked

How many people live in Marion County, Iowa?

Marion County, Iowa has about 32,052 residents according to the 2000 Census.

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

The typical household in Marion County, Iowa earns about $42,401 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 $87,100, and the typical rent is about $472 a month.

How educated are people in Marion County, Iowa?

About 18.9% 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 7.6% of people in Marion County, Iowa live below the federal poverty line.

Has Marion County, Iowa grown since 1990?

Yes, Marion County, Iowa has grown since 1990. The population has added about 2,051 residents, a change of about 7 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →