Plymouth County, Iowa Population 2018

Plymouth County, Iowa's estimated population is 25,220 with a growth rate of 0.06% in the past year according to the most recent United States census data. Plymouth County, Iowa is the 25th largest county in Iowa.

Year Population Growth Growth Rate
201725,027-193-0.77%
201725,220150.06%
201625,2053071.23%
201524,89810.00%
201424,897-19-0.08%
201324,916940.38%
201224,822140.06%
201124,808-162-0.65%
201024,9701,5826.76%
199023,388-1,355-5.48%
198024,7434311.77%
197024,3124061.70%
196023,9066542.81%
195023,252-250-1.06%
194023,502-657-2.72%
193024,1595752.44%
192023,5844551.97%
191023,1299204.14%
190022,2092,64113.50%
189019,56811,002128.44%
18808,5666,367289.54%
18702,1992,0511385.81%
18601480.00%

Plymouth County, Iowa Population Growth

Population Data via

Population by Race

Race Population
White23,897
Some Other Race448
Two or More Races320
Asian141
Black or African American110
American Indian and Alaska Native84
Native Hawaiian and Other Pacific Islander27

Data via US Census (2017 ACS 5-Year Survey): Table B03002

Plymouth County, Iowa Population Pyramid 2018

2004006008001,000 Male Population2004006008001,000 Female Population80757065605550454035302520151050

Data via US Census (2017 ACS 5-Year Survey): Table S0101

Plymouth County, Iowa Median Age

40.5


Total

39.6


Male

41.5


Female

Plymouth County, Iowa Adults

There are 18,720 adults, (4,460 of whom are seniors) in Plymouth County, Iowa.

Plymouth County, Iowa Age Dependency

75.5

Age Dependency Ratio

31.3

Old Age Dependency Ratio

44.2

Child Dependency Ratio

Plymouth County, Iowa Sex Ratio

Female

12,768

51.02%

Male

12,259

48.98%

Plymouth County, Iowa Households and Families

Plymouth County, Iowa Renter vs Owner Occupied by Household Type

Data via US Census (2017 ACS 5-Year Survey): Table S1101

Plymouth County, Iowa Household Types

Type Owner Renter
Married91.3%8.7%
All79.1%20.9%
Non Family65.4%34.6%
Female62.9%37.1%
Male42.7%57.3%

79.1%

Rate of Home Ownership

Plymouth County, Iowa Households by Type

Type Count Average Size Owned
All10,0832.4579.1
Married5,7852.9491.3
Non Family2,9081.1665.4
Female9753.0262.9
Male4153.1642.7

2.88

Average Family Size

2.45

Average Household Size

6.5%

Unmarried (Opposite Sex)

0.1%

Unmarried (Same Sex)

Plymouth County, Iowa Households

Plymouth County, Iowa Education

Plymouth County, Iowa Educational Attainment by Sex (over 25)

Education Attained Count Percentage
Less Than 9th Grade5583.34%
9th to 12th Grade6824.08%
High School Graduate5,72934.27%
Some College4,19125.07%
Associates Degree2,09112.51%
Bachelors Degree2,69616.13%
Graduate Degree7694.60%

Plymouth County, Iowa Educational Attainment by Race

Name Total High School Bachelors
White16,01414,9983,421
Hispanic43222116
Other Race20195
Multiple Races939115
Asian8476
Black6060
Native American443919
Islander44

The highest rate of high school graduation is among black people with a rate of 100.00%.

The highest rate of bachelors degrees is among black people with a rate of 43.18%.

Plymouth County, Iowa Earnings by Educational Attainment

Name Average Male Female
Overall$41,563$49,610$32,109
Less Than High School$22,545$28,500$11,771
High School Grad$40,014$46,757$26,174
Some College$38,987$47,444$31,561
Bachelors Degree$50,241$64,961$44,573
Graduate Degree$61,767$86,354$56,563

$41,563

Average Earnings

$49,610

Average Male

$32,109

Average Female

Plymouth County, Iowa Language

Plymouth County, Iowa Language by Age

Plymouth County, Iowa Language

95.74% of Plymouth County, Iowa residents speak only English, while 4.26% speak other languages. The largest non-English language is Spanish, which is spoken by 3.42% of the population.

Plymouth County, Iowa Poverty

Plymouth County, Iowa Poverty by Race

Name Total In Poverty Poverty Rate
White22,8191,6457.21%
Hispanic1,13237433.04%
Other44818040.18%
Multiple32012438.75%
Native845869.05%
Asian1413625.53%
Black1081614.81%

9.14%

Overall Poverty Rate

8.35%

Male Poverty Rate

9.91%

Female Poverty Rate

Poverty in Plymouth County, Iowa

The race most likely to be in poverty in Plymouth County, Iowa is Native, with 69.05% below the poverty level.

The race least likely to be in poverty in Plymouth County, Iowa is White, with 7.21% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.05%. Among those working part-time, it was 14.32%, and for those that did not work, the poverty rate was 11.93%.

Plymouth County, Iowa Poverty Rate by Education

Name Poverty
Less Than High School25.37%
High School6.03%
Some College4.99%
Bachelors or Greater1.66%

Plymouth County, Iowa Poverty Rate by Employment Status and Sex

Name Poverty
Male Unemployed36.26%
Female Unemployed36.23%
Female Employed6.74%
Male Employed5.17%

Plymouth County, Iowa Income

Plymouth County, Iowa Income by Household Type

Name Median Mean
Households$61,316$76,076
Families$74,514$87,995
Married Families$84,212$
Non Families$33,087$41,582

Plymouth County, Iowa Marital Status

Plymouth County, Iowa Marital Status

Marriage Rates

59.4%

Overall Marriage Rate

60.6%

Male Marriage Rate

58.2%

Female Marriage Rate

Plymouth County, Iowa Married by Age and Sex

Plymouth County, Iowa Marriage

The age group where males are most likely to be married is 55To64, while the female age group most likely to be married is 55To64.

Plymouth County, Iowa Marital Status by Race


Data via US Census (2017 ACS 5-Year Survey): Table S1201

Plymouth County, Iowa Veterans

Plymouth County, Iowa Veterans by War

1,649

Number of Veterans

1,509

Male Veterans

140

Female Veterans

Name Veterans
Vietnam707
First Gulf War260
Second Gulf War250
Korea162
World War II122

Plymouth County, Iowa Veterans by Age

Name Veterans
65 to 74509
75+455
35 to 54299
55 to 64277
18 to 34109

Plymouth County, Iowa Veterans by Race

Name Veterans % of Total
White1,6459.10%
Hispanic91.38%
Hawaiian250.00%
Indian24.55%

Plymouth County, Iowa Veterans by Education

1.48%

Veteran Poverty Rate

25.62%

Veteran Disability Rate

Plymouth County, Iowa Employment Status

Plymouth County, Iowa Employment by Age

69.1%

Labor Force Participation

67%

Employment Rate

2.9%

Unemployment Rate

Plymouth County, Iowa Employment by Race

Plymouth County, Iowa Employment by Education

Population of Cities in Plymouth County, Iowa

City 2010 Census 2016 Estimated Growth Growth Rate
Sioux City 82686828721860.22%
Le Mars982699351091.11%
Remsen16631650-13-0.78%
Akron14861465-21-1.41%
Kingsley14111427161.13%
Hinton95395520.21%
Merrill755741-14-1.85%
Brunsville151150-1-0.66%
Westfield132131-1-0.76%
Oyens103102-1-0.97%
Craig898900.00%
Struble787800.00%
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990