Plymouth County, Iowa demographics
Population: 25,543
Median age: 40.4
Median household income: 74,239
Demographics, population, home values, social and economic characteristics of Plymouth County, Iowa.
Population
| 2021 | 25,543 |
| 2020 | 25,141 |
| 2019 | 25,068 |
| 2018 | 25,039 |
| 2017 | 25,027 |
| 2016 | 24,972 |
| 2015 | 24,853 |
| 2014 | 24,899 |
| 2013 | 24,923 |
| 2012 | 24,911 |
| 2011 | 24,915 |
| 2010 | 24,933 |
| 2009 | 24,356 |
Plymouth County, IA cities
Akron city - 1,527
Brunsville city - 179
Craig city - 49
Hinton city - 932
Kingsley city - 1,433
Le Mars city - 10,462
Merrill city - 1,001
Oyens city - 94
Remsen city - 1,857
Sioux City city - 85,081
Struble city - 97
Westfield city - 120
Census data for Plymouth County, Iowa
Demographic and housing estimates in Plymouth County, Iowa
| Total population | 25,543 |
| Male | 12,852 |
| Female | 12,691 |
| Total population | 25,543 |
| Under 5 years | 1,559 |
| 5 to 9 years | 1,771 |
| 10 to 14 years | 1,912 |
| 15 to 19 years | 1,768 |
| 20 to 24 years | 1,428 |
| 25 to 34 years | 2,576 |
| 35 to 44 years | 3,040 |
| 45 to 54 years | 3,113 |
| 55 to 59 years | 1,747 |
| 60 to 64 years | 1,886 |
| 65 to 74 years | 2,665 |
| 75 to 84 years | 1,160 |
| 85 years and over | 918 |
| Median age (years) | 40.4 |
| Under 18 years | 6,441 |
| 16 years and over | 19,847 |
| 18 years and over | 19,102 |
| 21 years and over | 18,225 |
| 62 years and over | 5,743 |
| 65 years and over | 4,743 |
| Total population | 25,543 |
| One race | 25,201 |
| White | 23,903 |
| Black or African American | 436 |
| American Indian and Alaska Native | 131 |
| Asian | 103 |
| Native Hawaiian and Other Pacific Islander | 71 |
| Some other race | 557 |
| Two or more races | 342 |
| Citizen, VOTING AGE 18 and over population | 18,582 |
| Male Citizen, VOTING AGE 18 and over population | 9,176 |
| Female Citizen, VOTING AGE 18 and over population | 9,406 |
Social characteristics in Plymouth County, Iowa
| Total households | 10,191 |
| Family households (families) | 6,127 |
| Married-couple family | 594 |
| Male householder, no wife present, family | 1,547 |
| Female householder, no husband present, family | 1,224 |
| Nonfamily households | 1,923 |
| Average household size | 3,237 |
| Average family size | 2.48 |
Economic characteristics in Plymouth County, Iowa
| Total households | 10,191 |
| Less than $10,000 | 292 |
| $10,000 to $14,999 | 304 |
| $15,000 to $24,999 | 777 |
| $25,000 to $34,999 | 608 |
| $35,000 to $49,999 | 1,307 |
| $50,000 to $74,999 | 1,872 |
| $75,000 to $99,999 | 1,722 |
| $100,000 to $149,999 | 1,992 |
| $150,000 to $199,999 | 707 |
| $200,000 or more | 610 |
| Median household income (dollars) | 74,239 |
Housing characteristics in Plymouth County, Iowa
| Total housing units | 10,777 |
| Occupied housing units | 10,191 |
| Vacant housing units | 586 |
| Total housing units | 10,777 |
| 1-unit, detached | 8,709 |
| 1-unit, attached | 294 |
| 2 units | 169 |
| 3 or 4 units | 370 |
| 5 to 9 units | 394 |
| 10 to 19 units | 263 |
| 20 or more units | 186 |
| Mobile home | 392 |
| Boat, RV, van, etc. | 0 |
| Total housing units | 10,777 |
| Built 2014 or later | 19 |
| Built 2010 to 2013 | 567 |
| Built 2000 to 2009 | 1,060 |
| Built 1990 to 1999 | 1,389 |
| Built 1980 to 1989 | 785 |
| Built 1970 to 1979 | 1,675 |
| Built 1960 to 1969 | 935 |
| Built 1950 to 1959 | 964 |
| Built 1940 to 1949 | 381 |
| Built 1939 or earlier | 3,002 |
| Total housing units | 10,777 |
| 1 room | 90 |
| 2 rooms | 114 |
| 3 rooms | 596 |
| 4 rooms | 1,400 |
| 5 rooms | 1,672 |
| 6 rooms | 1,516 |
| 7 rooms | 1,361 |
| 8 rooms | 1,350 |
| 9 rooms or more | 2,678 |
| Median rooms | 6.5 |
| Total housing units | 10,777 |
| No bedroom | 90 |
| 1 bedroom | 643 |
| 2 bedrooms | 2,607 |
| 3 bedrooms | 4,016 |
| 4 bedrooms | 2,412 |
| 5 or more bedrooms | 1,009 |
| Occupied housing units | 10,191 |
| Owner-occupied | 7,764 |
| Renter-occupied | 2,427 |
| Average household size of owner-occupied unit | 2.61 |
| Average household size of renter-occupied unit | 2.05 |
| Occupied housing units | 10,191 |
| Moved in 2017 or later | 964 |
| Moved in 2015 to 2016 | 2,366 |
| Moved in 2010 to 2014 | 1,606 |
| Moved in 2000 to 2009 | 2,253 |
| Moved in 1990 to 1999 | 1,471 |
| Moved in 1989 and earlier | 1,531 |
| Owner-occupied units | 7,764 |
| Less than $50,000 | 445 |
| $50,000 to $99,999 | 1,010 |
| $100,000 to $149,999 | 1,509 |
| $150,000 to $199,999 | 1,481 |
| $200,000 to $299,999 | 1,469 |
| $300,000 to $499,999 | 1,618 |
| $500,000 to $999,999 | 171 |
| $1,000,000 or more | 61 |
| Median (dollars) | 176,800 |
| Owner-occupied units | 7,764 |
| Housing units with a mortgage | 4,397 |
| Housing units without a mortgage | 3,367 |
| Occupied units paying rent | 2,103 |
| Less than $500 | 269 |
| $500 to $999 | 1,469 |
| $1,000 to $1,499 | 353 |
| $1,500 to $1,999 | 0 |
| $2,000 to $2,499 | 0 |
| $2,500 to $2,999 | 0 |
| $3,000 or more | 12 |
| Median (dollars) | 760 |
| No rent paid | 324 |
Demographic data for Plymouth County, IA and each city in the county. Lists of cities by population, wealth and poverty in Plymouth County, IA.
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