Buchanan County, IA — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
20,645
Male
10,405
50.4%
Female
10,240
49.6%
Median Age
39.9 yrs
Avg Household Size
2.5
Foreign Born
1.6%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher15.0%
High School or Higher39.3%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
5.1%
Disability
0.0%
Non-English Home
3.6%
Married
46.3%
Buchanan County, IA has a population of 20,645 according to 2023 Census Bureau estimates. The median age is 39.9 years. The largest racial or ethnic group is White at 96.4% of the population. 15.0% of residents hold a bachelor's degree or higher. 1.6% of residents are foreign-born.