Mercer County, OH — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
42,438
Male
21,501
50.7%
Female
20,937
49.3%
Median Age
39.1 yrs
Avg Household Size
2.6
Foreign Born
1.3%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher14.6%
High School or Higher43.2%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
4.3%
Disability
0.0%
Non-English Home
3.5%
Married
44.9%
Mercer County, OH has a population of 42,438 according to 2023 Census Bureau estimates. The median age is 39.1 years. The largest racial or ethnic group is White at 95.0% of the population. 14.6% of residents hold a bachelor's degree or higher. 1.3% of residents are foreign-born.