Williamstown, MA Demographics

A map of Williamstown's Population by Race

Williamstown, Massachusetts has an estimated population of 5,070, a large increase from the 4,308 recorded in the 2020 Census. The population is 71.6% White, 7.7% Asian, 7.5% Multiracial, 6.3% Hispanic, 5.5% Black, and 1.6% Native American/Other. This demographic dot map shows the population of Williamstown, with one dot drawn for each person counted by the Census, color-coded by race.

Williamstown has become more racially diverse since the 2020 Census. It is considerably less diverse than Massachusetts overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Williamstown, that probability was 44.7% in 2020 and 46.9% in the most recent ACS estimates.

Williamstown is ranked the 123rd most populous place in Massachusetts, out of 248 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). Williamstown was ranked the 130th most populous place in the 2020 Census.

Williamstown's White Population

3,628 residents of Williamstown, or 71.6% of the population, identify as White. The share of White residents in Williamstown is slightly higher than in Massachusetts overall, where 66.6% of the population is White. Williamstown ranks 197th statewide in terms of White residents as a share of the population, out of 248 places.

Since the 2020 Census, Williamstown's White population has grown by an estimated 15.1%. White residents' share of Williamstown's population has decreased from 73.1% to 71.6%.

Williamstown is less White than neighboring Pownal (88.9% White), North Adams (86% White), Pownal Center (97.4% White), North Pownal (94.2% White), and Adams (92.5% White).

Williamstown's Black Population

278 residents of Williamstown, or 5.5% of the population, identify as Black. The share of Black residents in Williamstown is comparable to the share in Massachusetts overall, where 6.4% of the population is Black. Williamstown ranks 49th statewide in terms of Black residents as a share of the population, out of 248 places.

Since the 2020 Census, Williamstown's Black population has grown by an estimated 42.6%. Black residents' share of Williamstown's population has increased from 4.5% to 5.5%.

Williamstown is more Black than neighboring Pownal (0% Black), North Adams (1.5% Black), Pownal Center (0% Black), North Pownal (0% Black), and Adams (0.4% Black).

Williamstown's Asian Population

388 residents of Williamstown, or 7.7% of the population, identify as Asian. The share of Asian residents in Williamstown is comparable to the share in Massachusetts overall, where 7.3% of the population is Asian. Williamstown ranks 28th statewide in terms of Asian residents as a share of the population, out of 248 places.

Since the 2020 Census, Williamstown's Asian population has declined by an estimated 1.8%. Asian residents' share of Williamstown's population has decreased from 9.2% to 7.7%.

Williamstown is more Asian than neighboring Pownal (0% Asian), North Adams (4% Asian), Pownal Center (0% Asian), North Pownal (0% Asian), and Adams (1.2% Asian).

Williamstown's Hispanic Population

318 residents of Williamstown, or 6.3% of the population, identify as Hispanic. The share of Hispanic residents in Williamstown is lower than in Massachusetts overall, where 13.3% of the population is Hispanic. Williamstown ranks 61st statewide in terms of Hispanic residents as a share of the population, out of 248 places.

Since the 2020 Census, Williamstown's Hispanic population has grown by an estimated 3.2%. Hispanic residents' share of Williamstown's population has decreased from 7.1% to 6.3%.

Williamstown is more Hispanic than neighboring Pownal (5.8% Hispanic), North Adams (5.9% Hispanic), Pownal Center (2.6% Hispanic), North Pownal (0% Hispanic), and Adams (3% Hispanic).

Williamstown's Native American/Other Population

80 residents of Williamstown, or 1.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Williamstown is comparable to the share in Massachusetts overall, where 1.3% of the population is Native American/Other. Williamstown ranks 130th statewide in terms of Native American/Other residents as a share of the population, out of 248 places.

Since the 2020 Census, Williamstown's Native American/Other population has grown by an estimated 128.6%. Native American/Other residents' share of Williamstown's population has increased from 0.8% to 1.6%.

Williamstown is more Native American/Other than neighboring North Adams (1.1% Native American/Other), Pownal Center (0% Native American/Other), North Pownal (0% Native American/Other), and Adams (0.7% Native American/Other). Williamstown is less Native American/Other than neighboring Pownal (4.9% Native American/Other).

Williamstown's Multiracial Population

378 residents of Williamstown, or 7.5% of the population, identify as Multiracial. The share of Multiracial residents in Williamstown is slightly higher than in Massachusetts overall, where 5.1% of the population is Multiracial. Williamstown ranks 52nd statewide in terms of Multiracial residents as a share of the population, out of 248 places.

Since the 2020 Census, Williamstown's Multiracial population has grown by an estimated 68.8%. Multiracial residents' share of Williamstown's population has increased from 5.2% to 7.5%.

Williamstown is more Multiracial than neighboring Pownal (0.4% Multiracial), North Adams (1.6% Multiracial), Pownal Center (0% Multiracial), North Pownal (5.8% Multiracial), and Adams (2.2% 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.