Fairfield County's 2026 population is estimated at 172,026, reflecting a 1.25% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Fairfield County is the 19th largest county in Ohio. The 2010 population was 146,408 and has grown 17.5% since 2010.
Data after 2023 is projected based on recent change
Overall: 39.5 years
Female: 40.6 years
Male: 38.2 years
There are 124,477 adults, (27,165 of whom are seniors) in Fairfield County.
Female: 81,673 (50%)
Male: 81,780 (50%)
The racial composition of Fairfield County includes 81.51% White, 9.22% Black or African American, 3.04% Asian, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 133,228 | 81.51% |
| Black or African American | 15,064 | 9.22% |
| Two or more races | 7,752 | 4.74% |
| Asian | 4,961 | 3.04% |
| Other race | 2,054 | 1.26% |
| Native American | 255 | 0.16% |
| Native Hawaiian or Pacific Islander | 139 | 0.09% |
Fairfield County 's average per capita income is $57,314. Household income levels show a median of $90,966. The poverty rate stands at 8.01%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $120,233 | $139,856 |
| Families | $107,638 | $126,239 |
| Households | $90,966 | $110,296 |
| Non Families | $46,697 | $59,628 |
Average Income
Median Household Income
Poverty Rate
