Williamstown, NJ Demographics

A map of Williamstown's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	11,299	10,875	76.8%	72.1%
Black	1,536	2,018	10.4%	13.4%
Multiracial	907	639	6.2%	4.2%
Hispanic	805	1,172	5.5%	7.8%
Asian	155	332	1.1%	2.2%
Native American/Other	3	46	0.0%	0.3%

Williamstown, New Jersey has an estimated population of 14,705, a slight decrease from the 15,082 recorded in the 2020 Census. The population is 76.8% White, 10.4% Black, 6.2% Multiracial, 5.5% Hispanic, 1.1% Asian, and 0.0% 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 considerably less racially diverse since the 2020 Census. It is considerably less diverse than New Jersey 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 45.4% in 2020 and 39.2% in the most recent ACS estimates.

Williamstown is ranked the 87th most populous place in New Jersey, out of 700 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 77th most populous place in the 2020 Census.

Williamstown's White Population

11,299 residents of Williamstown, or 76.8% of the population, identify as White. The share of White residents in Williamstown is significantly higher than in New Jersey overall, where 50.9% of the population is White. Williamstown ranks 393rd statewide in terms of White residents as a share of the population, out of 700 places.

Since the 2020 Census, Williamstown's White population has grown by an estimated 3.9%. White residents' share of Williamstown's population has increased from 72.1% to 76.8%.

Williamstown is more White than neighboring Sicklerville (43.5% White), Pine Hill (48.1% White), Clayton (65.5% White), and Chesilhurst (41.9% White). Williamstown is less White than neighboring Victory Lakes (91.8% White).

Williamstown's Black Population

1,536 residents of Williamstown, or 10.4% of the population, identify as Black. The share of Black residents in Williamstown is comparable to the share in New Jersey overall, where 12.2% of the population is Black. Williamstown ranks 85th statewide in terms of Black residents as a share of the population, out of 700 places.

Since the 2020 Census, Williamstown's Black population has declined by an estimated 23.9%. Black residents' share of Williamstown's population has decreased from 13.4% to 10.4%.

Williamstown is more Black than neighboring Victory Lakes (2.6% Black). Williamstown is less Black than neighboring Sicklerville (36.1% Black), Pine Hill (25.9% Black), Clayton (22.3% Black), and Chesilhurst (36.9% Black).

Williamstown's Asian Population

155 residents of Williamstown, or 1.1% of the population, identify as Asian. The share of Asian residents in Williamstown is lower than in New Jersey overall, where 10% of the population is Asian. Williamstown ranks 422nd statewide in terms of Asian residents as a share of the population, out of 700 places.

Since the 2020 Census, Williamstown's Asian population has declined by an estimated 53.3%. Asian residents' share of Williamstown's population has decreased from 2.2% to 1.1%.

Williamstown is more Asian than neighboring Victory Lakes (0.1% Asian), Clayton (0.9% Asian), and Chesilhurst (0% Asian). Williamstown is less Asian than neighboring Sicklerville (4.4% Asian), and Pine Hill (2.2% Asian).

Williamstown's Hispanic Population

805 residents of Williamstown, or 5.5% of the population, identify as Hispanic. The share of Hispanic residents in Williamstown is significantly lower than in New Jersey overall, where 22.5% of the population is Hispanic. Williamstown ranks 424th statewide in terms of Hispanic residents as a share of the population, out of 700 places.

Since the 2020 Census, Williamstown's Hispanic population has declined by an estimated 31.3%. Hispanic residents' share of Williamstown's population has decreased from 7.8% to 5.5%.

Williamstown is less Hispanic than neighboring Sicklerville (9.4% Hispanic), Pine Hill (18.4% Hispanic), Clayton (7.6% Hispanic), and Chesilhurst (16.3% Hispanic).

Williamstown's Native American/Other Population

3 residents of Williamstown, 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 Williamstown is comparable to the share in New Jersey overall, where 0.9% of the population is Native American/Other. Williamstown ranks 571st statewide in terms of Native American/Other residents as a share of the population, out of 700 places.

Since the 2020 Census, Williamstown's Native American/Other population has declined by an estimated 93.5%. Native American/Other residents' share of Williamstown's population has remained roughly unchanged at 0.0%.

Williamstown is less Native American/Other than neighboring Sicklerville (1% Native American/Other), Clayton (0.3% Native American/Other), and Chesilhurst (1.1% Native American/Other).

Williamstown's Multiracial Population

907 residents of Williamstown, or 6.2% of the population, identify as Multiracial. The share of Multiracial residents in Williamstown is slightly higher than in New Jersey overall, where 3.5% of the population is Multiracial. Williamstown ranks 139th statewide in terms of Multiracial residents as a share of the population, out of 700 places.

Since the 2020 Census, Williamstown's Multiracial population has grown by an estimated 41.9%. Multiracial residents' share of Williamstown's population has increased from 4.2% to 6.2%.

Williamstown is more Multiracial than neighboring Victory Lakes (0% Multiracial), Sicklerville (5.6% Multiracial), Pine Hill (5.4% Multiracial), Clayton (3.3% Multiracial), and Chesilhurst (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.