Marion County, OH — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
65,145
Male
35,012
53.7%
Female
30,133
46.3%
Median Age
40.5 yrs
Avg Household Size
2.4
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 Higher9.7%
High School or Higher40.6%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
6.6%
Disability
0.0%
Non-English Home
7.7%
Married
37.8%
Marion County, OH has a population of 65,145 according to 2023 Census Bureau estimates. The median age is 40.5 years. The largest racial or ethnic group is White at 87.6% of the population. 9.7% of residents hold a bachelor's degree or higher. 1.7% of residents are foreign-born.