Ontario County Demographics

A map of Ontario County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	97,879	97,397	86.9%	86.6%
Hispanic	6,438	6,113	5.7%	5.4%
Multiracial	3,994	4,497	3.5%	4.0%
Black	2,314	2,439	2.1%	2.2%
Asian	1,518	1,374	1.3%	1.2%
Native American/Other	482	638	0.4%	0.6%

Ontario County, New York has an estimated population of 112,625, a less than 1% change from the 112,458 recorded in the 2020 Census. The population is 86.9% White, 5.7% Hispanic, 3.5% Multiracial, 2.1% Black, 1.3% Asian, and 0.4% Native American/Other. This demographic dot map shows the population of Ontario County, with one dot drawn for each person counted by the Census, color-coded by race.

Ontario has become slightly less racially diverse since the 2020 Census. It is considerably less diverse than New York overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Ontario County, that probability was 24.5% in 2020 and 24.0% in the most recent ACS estimates.

Ontario County is ranked the 26th most populous county in New York, out of 62 counties. Ontario County was ranked the 26th most populous county in the 2020 Census.

Ontario County's White Population

97,879 residents of Ontario County, or 86.9% of the population, identify as White. The share of White residents in Ontario County is significantly higher than in New York overall, where 52.8% of the population is White. Ontario County ranks 28th statewide in terms of White residents as a share of the population, out of 62 counties.

Since the 2020 Census, Ontario County's White population has remained roughly the same. White residents' share of Ontario County's population has remained roughly unchanged at 86.9%.

Ontario County is more White than neighboring Wayne County (86.6% White). Ontario County is less White than neighboring Yates County (93.7% White), Seneca County (87.3% White), Livingston County (88.1% White), and Steuben County (91.4% White).

Ontario County's Black Population

2,314 residents of Ontario County, or 2.1% of the population, identify as Black. The share of Black residents in Ontario County is considerably lower than in New York overall, where 13.4% of the population is Black. Ontario County ranks 41st statewide in terms of Black residents as a share of the population, out of 62 counties.

Since the 2020 Census, Ontario County's Black population has declined by an estimated 5.1%. Black residents' share of Ontario County's population has remained roughly unchanged at 2.1%.

Ontario County is more Black than neighboring Yates County (0.8% Black), Livingston County (1.9% Black), and Steuben County (1.6% Black). Ontario County is less Black than neighboring Seneca County (3.5% Black), and Wayne County (2.2% Black).

Ontario County's Asian Population

1,518 residents of Ontario County, or 1.3% of the population, identify as Asian. The share of Asian residents in Ontario County is lower than in New York overall, where 9% of the population is Asian. Ontario County ranks 31st statewide in terms of Asian residents as a share of the population, out of 62 counties.

Since the 2020 Census, Ontario County's Asian population has grown by an estimated 10.5%. Asian residents' share of Ontario County's population has remained roughly unchanged at 1.3%.

Ontario County is more Asian than neighboring Yates County (0.9% Asian), Seneca County (0.6% Asian), Livingston County (1.2% Asian), and Wayne County (0.7% Asian). Ontario County is less Asian than neighboring Steuben County (1.6% Asian).

Ontario County's Hispanic Population

6,438 residents of Ontario County, or 5.7% of the population, identify as Hispanic. The share of Hispanic residents in Ontario County is considerably lower than in New York overall, where 19.8% of the population is Hispanic. Ontario County ranks 28th statewide in terms of Hispanic residents as a share of the population, out of 62 counties.

Since the 2020 Census, Ontario County's Hispanic population has grown by an estimated 5.3%. Hispanic residents' share of Ontario County's population has remained roughly unchanged at 5.7%.

Ontario County is more Hispanic than neighboring Yates County (2.6% Hispanic), Seneca County (4.4% Hispanic), Livingston County (4.6% Hispanic), Wayne County (5.3% Hispanic), and Steuben County (2% Hispanic).

Ontario County's Native American/Other Population

482 residents of Ontario County, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Ontario County is comparable to the share in New York overall, where 1.2% of the population is Native American/Other. Ontario County ranks 44th statewide in terms of Native American/Other residents as a share of the population, out of 62 counties.

Since the 2020 Census, Ontario County's Native American/Other population has declined by an estimated 24.5%. Native American/Other residents' share of Ontario County's population has remained roughly unchanged at 0.4%.

Ontario County is more Native American/Other than neighboring Yates County (0.2% Native American/Other). Ontario County is less Native American/Other than neighboring Seneca County (0.8% Native American/Other), Livingston County (0.6% Native American/Other), and Wayne County (0.5% Native American/Other).

Ontario County's Multiracial Population

3,994 residents of Ontario County, or 3.5% of the population, identify as Multiracial. The share of Multiracial residents in Ontario County is comparable to the share in New York overall, where 3.8% of the population is Multiracial. Ontario County ranks 40th statewide in terms of Multiracial residents as a share of the population, out of 62 counties.

Since the 2020 Census, Ontario County's Multiracial population has declined by an estimated 11.2%. Multiracial residents' share of Ontario County's population has decreased from 4.0% to 3.5%.

Ontario County is more Multiracial than neighboring Yates County (1.9% Multiracial), and Steuben County (2.9% Multiracial). Ontario County is less Multiracial than neighboring Livingston County (3.6% Multiracial), and Wayne County (4.6% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.