Lyon County, IA — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
12,087
Male
6,175
51.1%
Female
5,912
48.9%
Median Age
38.1 yrs
Avg Household Size
2.7
Foreign Born
1.7%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher13.3%
High School or Higher39.4%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
4.3%
Disability
0.0%
Non-English Home
3.0%
Married
48.1%
Lyon County, IA has a population of 12,087 according to 2023 Census Bureau estimates. The median age is 38.1 years. The largest racial or ethnic group is White at 94.6% of the population. 13.3% of residents hold a bachelor's degree or higher. 1.7% of residents are foreign-born.