Plymouth County, Iowa Population 2018

Plymouth County, Iowa's estimated population is 25,220 with a growth rate of 0.99% 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
201725,2202480.99%
201624,972-233-0.92%
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
White23,828
Some Other Race505
Two or More Races271
Asian142
Black or African American122
Native Hawaiian and Other Pacific Islander58
American Indian and Alaska Native46

Race Data via US Census (2016 ACS 5-Year Survey)

Plymouth County, Iowa Population Pyramid 2018

0%2%4%6%8% Male Population0%2%4%6%8% Female Population80757065605550454035302520151050

Data via US Census (2016 ACS 5-Year Survey): Table S0101

Plymouth County, Iowa Median Age

41.5


Total

40.8


Male

42.1


Female

Plymouth County, Iowa Adults

There are 18,704 adults, (4,420 of which are seniors) in Plymouth County, Iowa.

Plymouth County, Iowa Age Dependency

74.8

Age Dependency Ratio

30.9

Old Age Dependency Ratio

43.9

Child Dependency Ratio

Plymouth County, Iowa Sex Ratio

Female

12,670

50.74%

Male

12,302

49.26%

Plymouth County, Iowa Households and Families

Plymouth County, Iowa Renter vs Owner Occupied by Household Type

Plymouth County, Iowa Household Types

Type Owner Renter
Married90.6%9.4%
All79%21%
Non Family64.9%35.1%
Female60.2%39.8%
Male59.5%40.5%

79.0%

Rate of Home Ownership

Plymouth County, Iowa Households by Type

Type Count Average Size Owned
All10,0082.4679
Married5,7202.9790.6
Non Family3,0871.2264.9
Female9123.2260.2
Male2893.1159.5

2.94

Average Family Size

2.46

Average Household Size

5.7%

Unmarried (Opposite Sex)

0.2%

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 Grade6323.75%
9th to 12th Grade7084.20%
High School Graduate5,82734.56%
Some College4,46226.47%
Associates Degree1,93811.50%
Bachelors Degree2,60415.45%
Graduate Degree6884.08%

Plymouth County, Iowa Educational Attainment by Race

Name Total High School Bachelors
White16,08515,0673,252
Hispanic5032127
Other Race25455
Multiple Races848113
Black7171
Asian6956
Native American452725
Islander88

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 55.56%.

Plymouth County, Iowa Earnings by Educational Attainment

Name Average Male Female
Overall$40,417$46,716$30,556
Less Than High School$25,338$40,724$12,976
High School Grad$34,842$43,536$24,413
Some College$38,194$46,508$31,108
Bachelors Degree$48,897$64,655$42,879
Graduate Degree$61,094$82,054$56,019

$40,417

Average Earnings

$46,716

Average Male

$30,556

Average Female

Plymouth County, Iowa Language

Plymouth County, Iowa Language by Age

Plymouth County, Iowa Language

95.21% of Plymouth County, Iowa residents speak only English, while 4.79% speak other languages. The largest non-English language is Spanish, which is spoken by 3.82% of the population.

Plymouth County, Iowa Poverty

Plymouth County, Iowa Poverty by Race

Name Total In Poverty Poverty Rate
White22,8501,6957.42%
Hispanic1,00224624.55%
Other50518035.64%
Multiple27112345.39%
Asian1423021.13%
Black1201714.17%

8.62%

Overall Poverty Rate

7.80%

Male Poverty Rate

9.42%

Female Poverty Rate

Poverty in Plymouth County, Iowa

The race most likely to be in poverty in Plymouth County, Iowa is Multiple, with 45.39% below the poverty level.

The race least likely to be in poverty in Plymouth County, Iowa is White, with 7.42% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.85%. Among those working part-time, it was 12.61%, and for those that did not work, the poverty rate was 11.32%.

Plymouth County, Iowa Poverty Rate by Education

Name Poverty
Less Than High School21.70%
High School6.91%
Some College5.16%
Bachelors or Greater1.47%

Plymouth County, Iowa Poverty Rate by Employment Status and Sex

Name Poverty
Female Unemployed45.11%
Male Unemployed31.40%
Female Employed5.50%
Male Employed4.72%

Plymouth County, Iowa Income

Plymouth County, Iowa Income by Household Type

Name Median Mean
Households$60,339$71,580
Families$71,620$82,842
Married Families$79,130$
Non Families$32,855$41,912

Plymouth County, Iowa Marital Status

Plymouth County, Iowa Marital Status

Marriage Rates

58.7%

Overall Marriage Rate

60.5%

Male Marriage Rate

57.0%

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 Over65, while the female age group most likely to be married is 45To54.

Plymouth County, Iowa Marital Status by Race

Plymouth County, Iowa Veterans

Plymouth County, Iowa Veterans by War

1,734

Number of Veterans

1,609

Male Veterans

125

Female Veterans

Name Veterans
Vietnam740
First Gulf War265
Second Gulf War263
Korea190
World War II135

Plymouth County, Iowa Veterans by Age

Name Veterans
65 to 74510
75+475
55 to 64320
35 to 54317
18 to 34112

Plymouth County, Iowa Veterans by Race

Name Veterans % of Total
White1,7309.57%
Hispanic71.23%
Hawaiian450.00%

Plymouth County, Iowa Veterans by Education

1.40%

Veteran Poverty Rate

24.39%

Veteran Disability Rate

Plymouth County, Iowa Employment Status

Plymouth County, Iowa Employment by Age

68.3%

Labor Force Participation

65.8%

Employment Rate

3.6%

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