Ontario County, New York
Located in New York, Ontario County has a population of 112,625 residents and a median age of 44.2 years, making it the #559 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 9.0%. The median home value is $222,900, and the median household income is $82,324, which is 10% above the national median.
Demographics
Ontario County has a population of 112,625, making it the #559 most populous county in the US. The median age is 44.2 years, which is 13.6% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Ontario County is $82,324, ranking #497 out of 3,222 counties — 9.5% above the national median. The poverty rate is 9.0% and unemployment stands at 3.7%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Ontario County is $222,900 (-20.9% vs national). Renters pay a median of $1,150/mo and the homeownership rate is 73.7%.
Median Home Value Trend
Rankings →Household Type
Education
In Ontario County, 38.0% of adults age 25+ hold a bachelor's degree or higher, which is 12.7% above the national average, ranking #348 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Ontario County is 79.8 years. 13.6% of adults report poor or fair health and 4.3% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
14.3% of adults in Ontario County smoke , 34.1% are obese , and 23.0% report excessive drinking. The drug overdose death rate is 15.5 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 14.8 per 100,000. Motor vehicle deaths occur at a rate of 7.4 per 100,000.
Suicide Rate Trend
Families & Children
10.1% of children in Ontario County live in poverty and the infant mortality rate is 5.4 per 1,000 live births. The teen birth rate is 7.3 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Ontario County is 69.8%. The mean commute time is 24.5 min, which is 11.2% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Ontario County voted Republican with a margin of 1.2%. The vote was 49.4% Dem / 50.6% Rep. Compared to 2020, the margin shifted 1.1 toward Republicans .
Vote Share Over Time
About Ontario County, New York
Ontario County, New York has a total population of 112,625, making it the 559th most populous county in the United States. The median age in Ontario County is 44.2 years, which is 13.6% above the national median of 38.9 years.
The median household income in Ontario County is $82,324, which ranks #497 of 3,222 counties nationwide. This is 9.5% above the national median of $75,149. The poverty rate is 9.0%, lower than the national rate of 12.6%. The unemployment rate stands at 3.7%.
The median home value in Ontario County is $222,900, 20.9% below the national median. Renters in Ontario County pay a median gross rent of $1,150 per month. The homeownership rate is 73.7%, compared to the national rate of 64.4%.
In Ontario County, 38.0% of residents aged 25 and older hold a bachelor's degree or higher, 12.7% above the national average of 33.7%. Health insurance coverage stands at 96.7% of the population. The average commute time for workers is 24.5 min.
Ontario County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 86.9% of the population, followed by Hispanic or Latino (5.7%) and Two or More Races (3.5%).
All data for Ontario County, New York comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.