Belmont, MA Demographics

A map of Belmont's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	18,709	18,989	68.8%	69.6%
Asian	5,294	5,038	19.5%	18.5%
Hispanic	1,345	1,273	4.9%	4.7%
Multiracial	1,230	1,282	4.5%	4.7%
Black	424	519	1.6%	1.9%
Native American/Other	173	194	0.6%	0.7%

Belmont, Massachusetts has an estimated population of 27,175, a less than 1% change from the 27,295 recorded in the 2020 Census. The population is 68.8% White, 19.5% Asian, 4.9% Hispanic, 4.5% Multiracial, 1.6% Black, and 0.6% Native American/Other. This demographic dot map shows the population of Belmont, with one dot drawn for each person counted by the Census, color-coded by race.

Belmont has become slightly more racially diverse since the 2020 Census. It is 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 Belmont, that probability was 47.7% in 2020 and 48.3% in the most recent ACS estimates.

Belmont is ranked the 61st 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). Belmont was ranked the 59th most populous place in the 2020 Census.

Belmont's White Population

18,709 residents of Belmont, or 68.8% of the population, identify as White. The share of White residents in Belmont is slightly higher than in Massachusetts overall, where 66.6% of the population is White. Belmont ranks 211th statewide in terms of White residents as a share of the population, out of 248 places.

Since the 2020 Census, Belmont's White population has declined by an estimated 1.5%. White residents' share of Belmont's population has decreased from 69.6% to 68.8%.

Belmont is more White than neighboring Waltham (57.6% White), Cambridge (53.8% White), and Newton (68.4% White). Belmont is less White than neighboring Arlington (73.8% White), and Winchester (70.5% White).

Belmont's Black Population

424 residents of Belmont, or 1.6% of the population, identify as Black. The share of Black residents in Belmont is slightly lower than in Massachusetts overall, where 6.4% of the population is Black. Belmont ranks 118th statewide in terms of Black residents as a share of the population, out of 248 places.

Since the 2020 Census, Belmont's Black population has declined by an estimated 18.3%. Black residents' share of Belmont's population has remained roughly unchanged at 1.6%.

Belmont is less Black than neighboring Arlington (2% Black), Waltham (8.3% Black), Cambridge (10.3% Black), Winchester (3% Black), and Newton (2.4% Black).

Belmont's Asian Population

5,294 residents of Belmont, or 19.5% of the population, identify as Asian. The share of Asian residents in Belmont is considerably higher than in Massachusetts overall, where 7.3% of the population is Asian. Belmont ranks 7th statewide in terms of Asian residents as a share of the population, out of 248 places.

Since the 2020 Census, Belmont's Asian population has grown by an estimated 5.1%. Asian residents' share of Belmont's population has increased from 18.5% to 19.5%.

Belmont is more Asian than neighboring Arlington (13% Asian), Waltham (12.6% Asian), Winchester (15.6% Asian), and Newton (17.4% Asian). Belmont is less Asian than neighboring Cambridge (20.2% Asian).

Belmont's Hispanic Population

1,345 residents of Belmont, or 4.9% of the population, identify as Hispanic. The share of Hispanic residents in Belmont is lower than in Massachusetts overall, where 13.3% of the population is Hispanic. Belmont ranks 106th statewide in terms of Hispanic residents as a share of the population, out of 248 places.

Since the 2020 Census, Belmont's Hispanic population has grown by an estimated 5.7%. Hispanic residents' share of Belmont's population has remained roughly unchanged at 4.9%.

Belmont is more Hispanic than neighboring Winchester (3.9% Hispanic), and Newton (4.5% Hispanic). Belmont is less Hispanic than neighboring Waltham (15.9% Hispanic), and Cambridge (8.8% Hispanic).

Belmont's Native American/Other Population

173 residents of Belmont, or 0.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Belmont is comparable to the share in Massachusetts overall, where 1.3% of the population is Native American/Other. Belmont ranks 156th statewide in terms of Native American/Other residents as a share of the population, out of 248 places.

Since the 2020 Census, Belmont's Native American/Other population has declined by an estimated 10.8%. Native American/Other residents' share of Belmont's population has remained roughly unchanged at 0.6%.

Belmont is less Native American/Other than neighboring Arlington (0.9% Native American/Other), Waltham (1.3% Native American/Other), Cambridge (1% Native American/Other), Winchester (1% Native American/Other), and Newton (1.8% Native American/Other).

Belmont's Multiracial Population

1,230 residents of Belmont, or 4.5% of the population, identify as Multiracial. The share of Multiracial residents in Belmont is comparable to the share in Massachusetts overall, where 5.1% of the population is Multiracial. Belmont ranks 83rd statewide in terms of Multiracial residents as a share of the population, out of 248 places.

Since the 2020 Census, Belmont's Multiracial population has declined by an estimated 4.1%. Multiracial residents' share of Belmont's population has remained roughly unchanged at 4.5%.

Belmont is more Multiracial than neighboring Waltham (4.3% Multiracial). Belmont is less Multiracial than neighboring Arlington (5.4% Multiracial), Cambridge (5.8% Multiracial), Winchester (6% Multiracial), and Newton (5.5% 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.