Ontario County's 2026 population is estimated at 113,826, reflecting a 0.36% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Ontario County is the 25th largest county in New York. The 2010 population was 108,183 and has grown 5.22% since 2010.
Data after 2023 is projected based on recent change
Overall: 44.2 years
Female: 46 years
Male: 42.7 years
There are 90,957 adults, (24,963 of whom are seniors) in Ontario County.
Female: 57,135 (50.7%)
Male: 55,490 (49.3%)
The racial composition of Ontario County includes 88.49% White, and smaller percentages for Black or African American, other race, Asian, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 99,659 | 88.49% |
| Two or more races | 6,879 | 6.11% |
| Black or African American | 2,353 | 2.09% |
| Other race | 2,122 | 1.88% |
| Asian | 1,578 | 1.4% |
| Native American | 34 | 0.03% |
Ontario County 's average per capita income is $55,910. Household income levels show a median of $82,324. The poverty rate stands at 9.01%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $121,509 | $151,399 |
| Families | $105,339 | $132,909 |
| Households | $82,324 | $108,042 |
| Non Families | $50,478 | $62,453 |
Average Income
Median Household Income
Poverty Rate