Seneca County, OH — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
54,861
Male
27,655
50.4%
Female
27,206
49.6%
Median Age
40.5 yrs
Avg Household Size
2.4
Foreign Born
1.5%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher14.0%
High School or Higher43.1%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
5.4%
Disability
0.0%
Non-English Home
4.6%
Married
40.6%
Seneca County, OH has a population of 54,861 according to 2023 Census Bureau estimates. The median age is 40.5 years. The largest racial or ethnic group is White at 90.5% of the population. 14.0% of residents hold a bachelor's degree or higher. 1.5% of residents are foreign-born.