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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

Total population
24,849
+6%since 1990
from 23,388 in 1990
1990 – 2025
Median age
37.8
+11%since 1990
from 34.1 in 1990
US average: 35.2
Population, 1990 – 2024
23K24K25K25K26K1990201020202024Plymouth County
202426K
1990201020202024
Age distribution, 2000
Under 56.6%(1,641)
US avg: 6.8%
5 to 97.6%(1,900)
US avg: 7.3%
10 to 148.3%(2,062)
US avg: 7.3%
15 to 198.5%(2,101)
US avg: 7.2%
20 to 244.6%(1,135)
US avg: 6.7%
25 to 3410.8%(2,677)
US avg: 14.2%
35 to 4415.7%(3,892)
US avg: 16%
45 to 5413.6%(3,374)
US avg: 13.4%
55 to 648.5%(2,103)
US avg: 8.6%
65 to 747.9%(1,972)
US avg: 6.5%
75 to 845.7%(1,410)
US avg: 4.4%
85 and over2.3%(582)
US avg: 1.5%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

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

Housing

Median home value
$90,100
+42%inflation adjusted, since 1990
from $48,100 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$416
+6%inflation adjusted, since 1990
from $298 in 1990
US average: $602
Owner-occupied
77.5%
+2.7 ptssince 1990
from 74.8% in 1990
22.5% rent
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)
2000
White, non-Hispanic97.4%(24,215)
Black0.3%(67)
Hispanic / Latino1.3%(328)
Asian0.3%(65)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin
Mexican4.8%(1,235)
Honduran1%(253)
Puerto Rican0.2%(52)
Colombian0.1%(26)
Spaniard0.1%(23)
Asian origin
Filipino0.3%(69)
Laotian0.1%(28)
Vietnamese0.1%(18)
Chinese0.1%(14)
Pacific Islander origin
Chuukese0.2%(41)
Ancestry
German39%(10,029)
Irish12.1%(3,111)
American6.7%(1,735)
English6.3%(1,613)
Dutch4.4%(1,121)
Norwegian2.4%(624)
French1.7%(441)
Swedish1.4%(361)
Danish1.1%(284)
Polish1%(265)
Italian0.9%(242)
+ 22 more ancestry groups with data
Scottish0.9%(227)
Czech0.4%(98)
Scotch-Irish0.3%(83)
Welsh0.2%(49)
British0.1%(38)
Greek0.1%(30)
Belgian0.1%(28)
Swiss0.1%(25)
Australian0.1%(19)
Slovene0.1%(16)
Portuguese0.1%(15)
Russian0.1%(14)
Slovak0%(12)
Somali0%(9)
Arab0%(4)
RANKED:Largest German population · Largest Irish population · Largest American population · Largest English population · Largest Mexican population
Section 05

Education

Bachelor's degree or higher
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%
Graduate degree
4.5%
+0.3 ptssince 1990
from 4.2% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
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.

Marital status
Men 15+
Never married25.4%(2,400)
Married65.7%(6,204)
Widowed2.6%(244)
Divorced6.4%(601)
Women 15+
Never married18.3%(1,793)
Married63.2%(6,183)
Widowed11.6%(1,130)
Divorced6.9%(676)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2000
Drill deeper

Places similar to Plymouth County

Teller County
Pop 24,756
Monroe County
Pop 32,023
Baker County
Pop 29,737
Blaine County
Pop 25,517
Places similar to Plymouth County
Head to head

Compare Plymouth County to nearby counties

PLYMOUTH COUNTY VS
Union County
Income$89,636+115%
Home value$301,100+234%
Population17,402−32%
SEE FULL COMPARISON →
PLYMOUTH COUNTY VS
Sioux County
Income$86,098+107%
Home value$250,100+178%
Population36,774+43%
SEE FULL COMPARISON →
PLYMOUTH COUNTY VS
Woodbury County
Income$73,658+77%
Home value$183,200+103%
Population106,649+315%
SEE FULL COMPARISON →
PLYMOUTH COUNTY VS
Cherokee County
Income$71,269+71%
Home value$158,700+76%
Population11,369−56%
SEE FULL COMPARISON →
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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Explore from here

6 census tracts
Census Tract 9701Census Tract 9706Census Tract 9702Census Tract 9703Census Tract 9705Census Tract 9704
11 ZIP codes
ZIP 51031ZIP 51108ZIP 51109ZIP 51050ZIP 51001ZIP 51028ZIP 51024ZIP 51038ZIP 51062ZIP 51008ZIP 51045
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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