Mahaska County, IA — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
22,045
Male
11,257
51.1%
Female
10,788
48.9%
Median Age
39.1 yrs
Avg Household Size
2.4
Foreign Born
2.1%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher15.3%
High School or Higher40.9%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
4.5%
Disability
0.0%
Non-English Home
4.0%
Married
43.3%
Mahaska County, IA has a population of 22,045 according to 2023 Census Bureau estimates. The median age is 39.1 years. The largest racial or ethnic group is White at 93.2% of the population. 15.3% of residents hold a bachelor's degree or higher. 2.1% of residents are foreign-born.