Ontario County, New York Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 26th-largest in New York
The population of Ontario County, New York is 112,405 as of the 2023 American Community Survey, making it the 26th-largest county in New York. The median household income is $79,814, the median home value is $202,900, and the median age is 43.9.
The population of Ontario County has grown 4.5% since 2010 (108,183 → 113,012), a +0.31% annualized rate.
112,405
Population
+0.31%
Annual growth
175
People / sq mi
$79,814
Median Income
$202,900
Median Home Value
Ontario County covers 644 sq mi of land at 174.5 people per square mile.
About Ontario County, NY
Ontario County is a county in New York with a population of 112,405. It ranks #26 among counties in New York by population. The median age is 43.9, older than the national median. The population is 49.3% male and 50.7% female.
The median household income in Ontario County is $79,814, above the US median of $74,580. 4.9% of residents live below the federal poverty level. Home values sit at a median of $202,900, with monthly rent averaging $1,126. The homeownership rate of 72.8% is higher than the national rate of 64.8%.
Educational attainment in Ontario County reflects 37.2% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 11.5% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 22.4 minutes each way.
Ontario County Population History (2010-2024)
The county of Ontario County had a population of 108,183 in 2010 and 113,012 in 2024, a 4.5% growth over 14 years. The peak was 113,012 in 2024. Average annual growth rate: 0.31%.
113,012
Population (2024)
108,183
Population (2010)
113,012
Peak (2024)
0.31%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 108,183 |
| 2011 | 108,616 |
| 2012 | 108,641 |
| 2013 | 109,081 |
| 2014 | 109,378 |
| 2015 | 109,324 |
| 2016 | 109,348 |
| 2017 | 109,652 |
| 2018 | 109,962 |
| 2019 | 109,984 |
| 2020 | 112,350 |
| 2021 | 112,648 |
| 2022 | 112,509 |
| 2023 | 112,605 |
| 2024 | 113,012 |
Race & Ethnicity
| White | 89.5% |
| Black or African American | 2.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.7% |
| Two or More Races | 0.0% |
Age & Sex
43.9
Median Age
50.7%
Female
49.3%
Male
21.6%
Age 65+
Age Distribution
Children (under 15): 15.8% · Seniors (65+): 21.6%
Income & Poverty
| Median household income | $79,814$-4,764 vs state |
| Mean household income | $104,658 |
| Per-capita income | $44,500 |
| Poverty rate | 4.9%-4.9% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 58.5% |
Top Industries by Employment
The largest employment sector in Ontario County is professional & business services, accounting for 28.7% of workers.
How residents commute
0.3%
Drive alone
3.3%
Carpool
76.7%
Public transit
11.5%
Work from home
22.4 min
Avg commute
Housing
$202,900$-200,100 vs state
Median home value
$1,126
Median rent
72.8%
Homeownership rate
53,001
Total housing units
90.0%
Occupied
10.0%
Vacant
27.2%
Renter-occupied
Social & access
96.8%
With health insurance
94.5%
With broadband internet
14.8%
Foreign-born
7.1%
Veterans (18+)
15.0%
With a disability
93.4%
Speak language other than English at home
Education
93.3%
High School+
37.2%
Bachelor's+
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Other counties in New York
Part of New York
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County rankings
Frequently Asked Questions
Ontario County, New York has a population of 112,405 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 26th-largest county in New York. Population density is 175 people per square mile.
The population of Ontario County has grown 4.5% since 2010 (108,183 → 113,012), a +0.31% annualized rate.
The median household income in Ontario County, New York is $79,814, with mean (average) household income of $104,658 and per-capita income of $44,500. 4.9% of residents live below the federal poverty level.
In Ontario County, the largest racial and ethnic groups are White (89.5%), Black or African American (2.3%), Hispanic or Latino (0.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Ontario County, New York is 43.9 years. Residents are 50.7% female and 49.3% male.
The median home value in Ontario County is $202,900 and median monthly rent is $1,126. 72.8% of occupied housing units are owner-occupied. The county has 53,001 total housing units, 10.0% of which are vacant.
The largest employment sector in Ontario County, New York is professional, scientific, and management services, employing 28.7% of workers. The unemployment rate is 2.5%.
New York is among the largest cities associated with Ontario County, New York, with a population of 8,516,202.
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Statewide data for New York
Population, race, income, age, and trends across New York
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.