How many people live in Ontario County, NY?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 113,000 people living in Ontario County, NY. That makes Ontario County the 26th-most populous county in New York. It is home to 0.56% of people living in the state.
113K
population of Ontario County, NY (2024)
0.56%
County share of the New York population (2024)
About 113,000 people lived in Ontario County, NY in 2024.
Population estimates, 2000–2024
What are Ontario County, NY’s age demographics?
About 26,700 Ontario County, NY residents are aged 65 and older in 2024. That represents 23.6% of its population. For comparison, the age group represents 18.9% of New York’s population and 18% in the US overall.
Another 21,200 Ontario County residents, or 18.8% of the population, were children under 18. For comparison, the age group represents 20.1% of New York’s population and 21.6% in the US overall.
A higher share of Ontario County, NY's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Ontario County, NY’s racial and ethnic demographics?
Non-Hispanic white residents make up 87.8% of the Ontario County, NY population, higher than the national share of 57.5%.
In contrast, Ontario County’s Hispanic population accounts for 6%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 2.7% of the county, compared with 12.6% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Ontario County, NY has a higher share of a non-Hispanic white population than New York as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Ontario County, NY is Farmington with about 15,000 residents in 2024.
Cities and towns in Ontario County, NY ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Farmington | 15,038 |
| 2. | Geneva (pt.) | 12,397 |
| 3. | Canandaigua | 11,478 |
| 4. | Canandaigua | 10,476 |
| 5. | Hopewell | 3,890 |
| 6. | Geneva | 3,474 |
| 7. | Richmond | 3,302 |
| 8. | West Bloomfield | 2,730 |
| 9. | Victor | 2,670 |
| 10. | Seneca | 2,617 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
