Marion County's estimated 2026 population is 65,272 with a growth rate of 0.23% in the past year according to the most recent United States census data. Marion County is the 37th largest county in Ohio. The 2010 population was 66,459 and has seen a growth of -1.79% since that time.
Data after 2023 is projected based on recent change
The racial composition of Marion County includes 87.62% White, 5.21% Black or African American, and smaller percentages for other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (87.62%)
Black or African American (5.21%)
Two or more races (5.18%)
Other race (1.19%)
Asian (0.67%)
Native American (0.11%)
Native Hawaiian or Pacific Islander (0.02%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 57,079 | 87.62% |
| Black or African American | 3,395 | 5.21% |
| Two or more races | 3,372 | 5.18% |
| Other race | 777 | 1.19% |
| Asian | 437 | 0.67% |
| Native American | 72 | 0.11% |
| Native Hawaiian or Pacific Islander | 13 | 0.02% |
Married
Widowed
Divorced
Separated
Never Married
Marion County's average per capita income is $42,551. Household income levels show a median of $57,306. The poverty rate stands at 15.35%.
Name | Median | Mean |
|---|---|---|
| Married Families | $91,342 | $113,090 |
| Families | $73,424 | $94,676 |
| Households | $57,306 | $78,335 |
| Non Families | $34,580 | $47,628 |
Average Income
Median Household Income
Poverty Rate
