Mercer County's estimated 2025 population is 42,469 with a growth rate of 0.04% in the past year according to the most recent United States census data. Mercer County is the 57th largest county in Ohio. The 2010 population was 40,791 and has seen a growth of 4.11% since that time.
Data after 2023 is projected based on recent change
The racial composition of Mercer County includes 94.98% White, and smaller percentages for Two or more races, other race, Black or African American, Asian, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 40,308 | 94.98% |
| Two or more races | 1,156 | 2.72% |
| Other race | 404 | 0.95% |
| Black or African American | 298 | 0.7% |
| Asian | 213 | 0.5% |
| Native Hawaiian or Pacific Islander | 36 | 0.08% |
| Native American | 23 | 0.05% |
Married
Widowed
Divorced
Separated
Never Married
Mercer County's average per capita income is $50,056. Household income levels show a median of $78,036. The poverty rate stands at 6.14%.
Name | Median | Mean |
|---|---|---|
| Married Families | $107,556 | - |
| Families | $100,194 | $106,729 |
| Households | $78,036 | $90,650 |
| Non Families | $43,963 | $56,145 |
Average Income
Median Household Income
Poverty Rate
