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COUNTY · 2000 CENSUS

Plymouth County

Iowa · 24,849 residents · 862.828 sq mi
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The short version

Plymouth County has roughly average household income, with a median household income of $41,638. Population has held roughly steady since 1990. Median home value has more than doubled since 1990, reaching $90,100. Poverty is rare here, at 6.0% of residents.

At a glance
Average income
near the US median
US median: $42,589
Older
median age 37.8
US median: 35.2
Less educated
19% hold a bachelor's degree
US average: 24%
Less affordable
home values up 42%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

24,849
+6%since 1990
from 23,388 in 1990
1990 – 2025
29 / sq mi
+6%since 1990
from 27 / sq mi in 1990
US average: 242
37.8
+11%since 1990
from 34.1 in 1990
US average: 35.2
Population, 19902024
23K24K25K25K26K1990201020202024Plymouth County
202426K
1990201020202024
Section 02

Income & economy

$41,638
+18%inflation adjusted, since 1990
from $26,796 in 1990
US average: $42,589
1990 – 2024
$19,442
+69%since 1990
from $11,507 in 1990
US average: $21,522
6.0%
−3.0 ptssince 1990
from 9.0% in 1990
US average: 12.4%
Section 03

Housing

$90,100
+42%inflation adjusted, since 1990
from $48,100 in 1990
US average: $120,530
1990 – 2024
$416
+6%inflation adjusted, since 1990
from $298 in 1990
US average: $602
77.5%
+2.7 ptssince 1990
from 74.8% in 1990
22.5% rent
2.2
+21%since 1990
from 1.8 in 1990
1990 – 2024
RELATED:See current rent listings in Plymouth County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic99.6%(23,299)
Black0.1%(28)
Hispanic / Latino0.1%(33)
Asian0%(8)
Diversity Score1.3%(304)
2000
White, non-Hispanic97.4%(24,215)
Black0.3%(67)
Hispanic / Latino1.3%(328)
Asian0.3%(65)
Diversity Score4.6%(1,141)
5
+254%since 1990
from 1 in 1990
1990 – 2024
Section 05

Education

19.3%
+4.3 ptssince 1990
from 15.0% in 1990
US average: 24.4%
High school or higher
87.4%
+9.4 ptssince 1990
from 78.0% in 1990
US average: 80.3%
4.5%
+0.3 ptssince 1990
from 4.2% in 1990
US average: 8.8%
Section 06

Commute & transportation

13.3 min
−50%since 1990
from 26.3 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 Plymouth County, Iowa?

Plymouth County, Iowa has about 24,849 residents according to the 2000 Census.

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

The typical household in Plymouth County, Iowa earns about $41,638 a year. Half of households make more than that, and half make less.

Is Plymouth County, Iowa expensive?

In Plymouth County, Iowa, the median home is worth about $90,100, and the typical rent is about $416 a month.

How educated are people in Plymouth County, Iowa?

About 19.3% of adults age 25 and over in Plymouth County, Iowa hold a bachelor's degree or higher.

What is the poverty rate in Plymouth County, Iowa?

About 6.0% of people in Plymouth County, Iowa live below the federal poverty line.

Has Plymouth County, Iowa grown since 1990?

Yes, Plymouth County, Iowa has grown since 1990. The population has added about 1,461 residents, a change of about 6 percent over that period.

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

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