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COUNTY · 2000 CENSUS

Decatur County

Iowa · 8,689 residents · 531.883 sq mi
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The short version

Decatur County has notably lower household income than the US average, with a median household income of $27,343. Population has held roughly steady since 1990. 15% of adults hold a bachelor's degree or higher, below the national rate of 24%. Median home value has more than doubled since 1990, reaching $51,900. Households here earn about 31% less than the Iowa median.

At a glance
Lower income
below the US median
US median: $42,589
Mid-age
median age 36.4
US median: 35.2
Less educated
15% hold a bachelor's degree
US average: 24%
Less affordable
home values up 73%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

8,689
+4%since 1990
from 8,338 in 1990
1990 – 2025
16 / sq mi
+4%since 1990
from 16 / sq mi in 1990
US average: 242
36.4
+3%since 1990
from 35.4 in 1990
US average: 35.2
Population, 19902024
8K8K8K8K9K1990201020202024Decatur County
20248K
1990201020202024
Section 02

Income & economy

$27,343
+15%inflation adjusted, since 1990
from $18,105 in 1990
US average: $42,589
1990 – 2024
$14,209
+59%since 1990
from $8,918 in 1990
US average: $21,522
15.5%
−5.5 ptssince 1990
from 21.0% in 1990
US average: 12.4%
Section 03

Housing

$51,900
+73%inflation adjusted, since 1990
from $22,800 in 1990
US average: $120,530
1990 – 2024
$340
+17%inflation adjusted, since 1990
from $220 in 1990
US average: $602
71.1%
+0.2 ptssince 1990
from 70.8% in 1990
28.9% rent
1.9
+51%since 1990
from 1.3 in 1990
1990 – 2024
RELATED:See current rent listings in Decatur County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic99.1%(8,261)
Black0.2%(15)
Hispanic / Latino0.5%(43)
Asian0.4%(35)
Diversity Score3.5%(296)
2000
White, non-Hispanic95.5%(8,296)
Black0.9%(79)
Hispanic / Latino1.7%(148)
Asian0.6%(54)
Diversity Score8%(695)
8
+126%since 1990
from 4 in 1990
1990 – 2024
Section 05

Education

15.1%
+2.9 ptssince 1990
from 12.3% in 1990
US average: 24.4%
High school or higher
81.7%
+9.9 ptssince 1990
from 71.8% in 1990
US average: 80.3%
5.4%
+0.4 ptssince 1990
from 5.0% in 1990
US average: 8.8%
Section 06

Commute & transportation

17.7 min
−33%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.

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Frequently asked

How many people live in Decatur County, Iowa?

Decatur County, Iowa has about 8,689 residents according to the 2000 Census.

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

The typical household in Decatur County, Iowa earns about $27,343 a year. Half of households make more than that, and half make less.

Is Decatur County, Iowa expensive?

In Decatur County, Iowa, the median home is worth about $51,900, and the typical rent is about $340 a month.

How educated are people in Decatur County, Iowa?

About 15.1% of adults age 25 and over in Decatur County, Iowa hold a bachelor's degree or higher.

What is the poverty rate in Decatur County, Iowa?

About 15.5% of people in Decatur County, Iowa live below the federal poverty line.

Has Decatur County, Iowa grown since 1990?

Yes, Decatur County, Iowa has grown since 1990. The population has added about 351 residents, a change of about 4 percent over that period.

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

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