Decatur County, IA — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
7,669
Male
3,856
50.3%
Female
3,813
49.7%
Median Age
36.2 yrs
Avg Household Size
2.3
Foreign Born
1.9%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher15.1%
High School or Higher38.4%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
4.9%
Disability
0.0%
Non-English Home
6.8%
Married
44.2%
Decatur County, IA has a population of 7,669 according to 2023 Census Bureau estimates. The median age is 36.2 years. The largest racial or ethnic group is White at 92.9% of the population. 15.1% of residents hold a bachelor's degree or higher. 1.9% of residents are foreign-born.