Plymouth County, IA — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
25,699
Male
13,092
50.9%
Female
12,607
49.1%
Median Age
41.1 yrs
Avg Household Size
2.5
Foreign Born
4.3%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher16.2%
High School or Higher40.9%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
5.8%
Disability
0.0%
Non-English Home
4.0%
Married
47.8%
Plymouth County, IA has a population of 25,699 according to 2023 Census Bureau estimates. The median age is 41.1 years. The largest racial or ethnic group is White at 90.5% of the population. 16.2% of residents hold a bachelor's degree or higher. 4.3% of residents are foreign-born.