Marion County, Ohio Demographics 2026
Marion County, Ohio has a population of 65,145, the 38th most populous county in Ohio. The median household income is $57,306 and the median home value is $146,200. The poverty rate is 15.3%.
Marion County Quick Facts
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 40 | National average: 61
Education
Educational Attainment (Adults 25+)
Cities & Places in Marion County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Marion | 35,771 | $45,829 | 22.1% | $105,900 |
| Prospect | 1,330 | $68,807 | 7.2% | $162,100 |
| La Rue | 801 | $62,500 | 22.1% | $109,800 |
| Green Camp | 451 | $61,750 | 4.5% | $118,900 |
| Caledonia | 444 | $65,972 | 16.3% | $118,000 |
| New Bloomington | 410 | $26,786 | 56.6% | $55,400 |
| Morral | 392 | N/A | 13.1% | $117,300 |
| Waldo | 375 | $72,083 | 0.8% | $149,100 |
Explore Ohio Rankings
Population Overview
Marion County is located in Ohio with a total population of 65,145. It is the 38th most populous county out of 88 in Ohio. The county encompasses 8 Census-designated places.
Age Demographics
The median age in Marion County is 40.5 years. This is 2% higher than the state median of 39.6 years.
Economy, Income & Housing
The median household income in Marion County is $57,306. This is 18% lower than the state median of $69,680. It is also 27% lower than the national median of $78,538. The poverty rate stands at 15.3%. This is 16% higher than the state poverty rate of 13.2%. The unemployment rate is 5.9%. This is 23% higher than the state rate of 4.9%. The median home value is $146,200. Housing costs are 27% lower than the state median of $199,200. With a home-value-to-income ratio of just 2.6x, Marion County is one of the most affordable housing markets in the area. 67.8% of occupied housing units are owner-occupied. This homeownership rate is 1% higher than the state average of 67.0%.
Race & Ethnicity
Marion County has a predominantly White (non-Hispanic) population, comprising 86.6% of all residents. Black or African American residents account for 4.9%. The Black or African American population (4.9%) is well below the state average of 12.1%. The Asian population (0.6%) is well below the state average of 2.4%.
Education
13.7% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. This is 56% lower than the state rate of 30.9%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 89.1%.
Data Sources & Methodology
All figures for Marion County come from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023), with comparisons drawn against Ohio and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.
Frequently Asked Questions
What is the population of Marion County, Ohio?
Marion County has a population of 65,145, making it the 38th most populous county in Ohio.
What is the median income in Marion County?
The median household income in Marion County is $57,306 with a poverty rate of 15.3%.
How many cities are in Marion County, Ohio?
Marion County contains 8 Census-designated places.