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COUNTY · 2000 CENSUS

Warren County

Iowa · 40,671 residents · 569.658 sq mi
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The short version

Warren County is wealthier than most US places, with a median household income of $50,349. Population has held roughly steady since 1990. Median home value has risen by half since 1990, reaching $102,600. Poverty is rare here, at 5.1% of residents. Households here earn about 28% more than the Iowa median.

At a glance
Wealthier
above the US median
US median: $42,589
Mid-age
median age 36.0
US median: 35.2
Average education
21% hold a bachelor's degree
US average: 24%
Less affordable
home values up 31%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

Total population
40,671
+13%since 1990
from 36,033 in 1990
1990 – 2025
Population density
71 / sq mi
+13%since 1990
from 63 / sq mi in 1990
US average: 242
Median age
36.0
+10%since 1990
from 32.8 in 1990
US average: 35.2
Population, 1990 – 2024
34K40K45K51K56K1990201020202024Warren County
202454K
1990201020202024
Section 02

Income & economy

Median household income
$50,349
+18%inflation adjusted, since 1990
from $32,452 in 1990
US average: $42,589
1990 – 2024
Per capita income
$20,558
+61%since 1990
from $12,732 in 1990
US average: $21,522
Poverty rate
5.1%
−1.2 ptssince 1990
from 6.3% in 1990
US average: 12.4%
Section 03

Housing

Median home value
$102,600
+31%inflation adjusted, since 1990
from $59,400 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$494
+8%inflation adjusted, since 1990
from $348 in 1990
US average: $602
Owner-occupied
79.9%
+3.1 ptssince 1990
from 76.8% in 1990
20.1% rent
Afford Score
2.0
+11%since 1990
from 1.8 in 1990
1990 – 2024
RELATED:See current rent listings in Warren County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic99.2%(35,735)
Black0.1%(44)
Hispanic / Latino0.7%(249)
Asian0.4%(137)
Diversity Score3.7%(1,345)
2000
White, non-Hispanic97.5%(39,635)
Black0.3%(106)
Hispanic / Latino1.1%(441)
Asian0.4%(155)
Diversity Score4.3%(1,747)
Diversity Score
4
+15%since 1990
from 4 in 1990
1990 – 2024
Section 05

Education

Bachelor's degree or higher
21.2%
+5.1 ptssince 1990
from 16.2% in 1990
US average: 24.4%
High school or higher
90.0%
+3.0 ptssince 1990
from 87.0% in 1990
US average: 80.3%
Graduate degree
6.1%
+1.6 ptssince 1990
from 4.4% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
17.0 min
−36%since 1990
from 26.5 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 Warren County

Grundy County
Pop 54,052
Garfield County
Pop 63,474
La Plata County
Pop 56,898
Eagle County
Pop 54,291
Places similar to Warren County
Head to head

Compare Warren County to nearby counties

WARREN COUNTY VS
Madison County
Income$90,855+80%
Home value$245,100+139%
Population17,270−70%
SEE FULL COMPARISON →
WARREN COUNTY VS
Clarke County
Income$71,641+42%
Home value$161,100+57%
Population9,574−83%
SEE FULL COMPARISON →
WARREN COUNTY VS
Lucas County
Income$61,793+23%
Home value$120,200+17%
Population8,847−85%
SEE FULL COMPARISON →
WARREN COUNTY VS
Polk County
Income$83,576+66%
Home value$262,100+155%
Population516,546+801%
SEE FULL COMPARISON →
Frequently asked

How many people live in Warren County, Iowa?

Warren County, Iowa has about 40,671 residents according to the 2000 Census.

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

The typical household in Warren County, Iowa earns about $50,349 a year. Half of households make more than that, and half make less.

Is Warren County, Iowa expensive?

In Warren County, Iowa, the median home is worth about $102,600, and the typical rent is about $494 a month.

How educated are people in Warren County, Iowa?

About 21.2% of adults age 25 and over in Warren County, Iowa hold a bachelor's degree or higher.

What is the poverty rate in Warren County, Iowa?

About 5.1% of people in Warren County, Iowa live below the federal poverty line.

Has Warren County, Iowa grown since 1990?

Yes, Warren County, Iowa has grown since 1990. The population has added about 4,638 residents, a change of about 13 percent over that period.

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Explore from here

14 census tracts
Census Tract 202.02Census Tract 202.01Census Tract 211Census Tract 204Census Tract 212Census Tract 203Census Tract 208Census Tract 209Census Tract 206Census Tract 207.02Census Tract 210Census Tract 205Census Tract 201.01Census Tract 207.01
12 ZIP codes
ZIP 50125ZIP 50211ZIP 50047ZIP 50166ZIP 50229ZIP 50210ZIP 50139ZIP 50118ZIP 50001ZIP 50160ZIP 50145ZIP 50241
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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