Williamsville, NY Demographics

A map of Williamsville's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	4,975	4,627	91.0%	85.3%
Multiracial	239	158	4.4%	2.9%
Black	118	188	2.2%	3.5%
Hispanic	96	186	1.8%	3.4%
Asian	41	248	0.7%	4.6%
Native American/Other	0	16	0.0%	0.3%

Williamsville, New York has an estimated population of 5,469, a less than 1% change from the 5,423 recorded in the 2020 Census. The population is 91.0% White, 4.4% Multiracial, 2.2% Black, 1.8% Hispanic, 0.7% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Williamsville, with one dot drawn for each person counted by the Census, color-coded by race.

Williamsville has become considerably 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 Williamsville, that probability was 26.7% in 2020 and 17.0% in the most recent ACS estimates.

Williamsville is ranked the 335th most populous place in New York, out of 1,291 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Williamsville was ranked the 341st most populous place in the 2020 Census.

Williamsville's White Population

4,975 residents of Williamsville, or 91.0% of the population, identify as White. The share of White residents in Williamsville is significantly higher than in New York overall, where 52.8% of the population is White. Williamsville ranks 667th statewide in terms of White residents as a share of the population, out of 1,291 places.

Since the 2020 Census, Williamsville's White population has grown by an estimated 7.5%. White residents' share of Williamsville's population has increased from 85.3% to 91.0%.

Williamsville is more White than neighboring Cheektowaga (71.5% White), University at Buffalo (52% White), Depew (89.4% White), and Eggertsville (70% White). Williamsville is less White than neighboring Harris Hill (95.2% White).

Williamsville's Black Population

118 residents of Williamsville, or 2.2% of the population, identify as Black. The share of Black residents in Williamsville is considerably lower than in New York overall, where 13.4% of the population is Black. Williamsville ranks 340th statewide in terms of Black residents as a share of the population, out of 1,291 places.

Since the 2020 Census, Williamsville's Black population has declined by an estimated 37.2%. Black residents' share of Williamsville's population has decreased from 3.5% to 2.2%.

Williamsville is more Black than neighboring Depew (2% Black), and Harris Hill (0.3% Black). Williamsville is less Black than neighboring Cheektowaga (13.5% Black), University at Buffalo (14.5% Black), and Eggertsville (12.7% Black).

Williamsville's Asian Population

41 residents of Williamsville, or 0.7% of the population, identify as Asian. The share of Asian residents in Williamsville is lower than in New York overall, where 9% of the population is Asian. Williamsville ranks 264th statewide in terms of Asian residents as a share of the population, out of 1,291 places.

Since the 2020 Census, Williamsville's Asian population has declined by an estimated 83.5%. Asian residents' share of Williamsville's population has decreased from 4.6% to 0.7%.

Williamsville is less Asian than neighboring Cheektowaga (5.9% Asian), University at Buffalo (19.9% Asian), Depew (1.4% Asian), Harris Hill (1.3% Asian), and Eggertsville (9.7% Asian).

Williamsville's Hispanic Population

96 residents of Williamsville, or 1.8% of the population, identify as Hispanic. The share of Hispanic residents in Williamsville is significantly lower than in New York overall, where 19.8% of the population is Hispanic. Williamsville ranks 790th statewide in terms of Hispanic residents as a share of the population, out of 1,291 places.

Since the 2020 Census, Williamsville's Hispanic population has declined by an estimated 48.4%. Hispanic residents' share of Williamsville's population has decreased from 3.4% to 1.8%.

Williamsville is less Hispanic than neighboring Cheektowaga (4.9% Hispanic), University at Buffalo (9% Hispanic), Depew (3.8% Hispanic), Harris Hill (1.9% Hispanic), and Eggertsville (2.6% Hispanic).

Williamsville's Native American/Other Population

0 residents of Williamsville, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Williamsville is comparable to the share in New York overall, where 1.2% of the population is Native American/Other. Williamsville ranks 1016th statewide in terms of Native American/Other residents as a share of the population, out of 1,291 places.

Since the 2020 Census, Williamsville's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Williamsville's population has remained roughly unchanged at 0.0%.

Williamsville is less Native American/Other than neighboring Cheektowaga (0.8% Native American/Other), University at Buffalo (1% Native American/Other), Depew (0.2% Native American/Other), and Eggertsville (1.2% Native American/Other).

Williamsville's Multiracial Population

239 residents of Williamsville, or 4.4% of the population, identify as Multiracial. The share of Multiracial residents in Williamsville is comparable to the share in New York overall, where 3.8% of the population is Multiracial. Williamsville ranks 800th statewide in terms of Multiracial residents as a share of the population, out of 1,291 places.

Since the 2020 Census, Williamsville's Multiracial population has grown by an estimated 51.3%. Multiracial residents' share of Williamsville's population has increased from 2.9% to 4.4%.

Williamsville is more Multiracial than neighboring Cheektowaga (3.5% Multiracial), University at Buffalo (3.6% Multiracial), Depew (3.1% Multiracial), Harris Hill (1.3% Multiracial), and Eggertsville (3.8% 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.