Marlborough, MA Demographics

A map of Marlborough's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	22,515	24,696	54.1%	59.1%
Hispanic	7,477	6,631	18.0%	15.9%
Multiracial	6,277	4,012	15.1%	9.6%
Asian	2,214	2,450	5.3%	5.9%
Native American/Other	1,635	2,710	3.9%	6.5%
Black	1,529	1,294	3.7%	3.1%

Marlborough, Massachusetts has an estimated population of 41,647, a less than 1% change from the 41,793 recorded in the 2020 Census. The population is 54.1% White, 18.0% Hispanic, 15.1% Multiracial, 5.3% Asian, 3.9% Native American/Other, and 3.7% Black. This demographic dot map shows the population of Marlborough, with one dot drawn for each person counted by the Census, color-coded by race.

Marlborough has become more racially diverse since the 2020 Census. It is considerably more 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 Marlborough, that probability was 60.8% in 2020 and 64.7% in the most recent ACS estimates.

Marlborough is ranked the 36th 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). Marlborough was ranked the 35th most populous place in the 2020 Census.

Marlborough's White Population

22,515 residents of Marlborough, or 54.1% of the population, identify as White. The share of White residents in Marlborough is considerably lower than in Massachusetts overall, where 66.6% of the population is White. Marlborough ranks 226th statewide in terms of White residents as a share of the population, out of 248 places.

Since the 2020 Census, Marlborough's White population has declined by an estimated 8.8%. White residents' share of Marlborough's population has decreased from 59.1% to 54.1%.

Marlborough is more White than neighboring Framingham (49.9% White). Marlborough is less White than neighboring Hudson (79.2% White), Cordaville (65.5% White), Northborough (78.5% White), and Westborough (76.1% White).

Marlborough's Black Population

1,529 residents of Marlborough, or 3.7% of the population, identify as Black. The share of Black residents in Marlborough is slightly lower than in Massachusetts overall, where 6.4% of the population is Black. Marlborough ranks 75th statewide in terms of Black residents as a share of the population, out of 248 places.

Since the 2020 Census, Marlborough's Black population has grown by an estimated 18.2%. Black residents' share of Marlborough's population has increased from 3.1% to 3.7%.

Marlborough is more Black than neighboring Hudson (1.2% Black), Cordaville (1.2% Black), Northborough (2.2% Black), and Westborough (1.1% Black). Marlborough is less Black than neighboring Framingham (5.6% Black).

Marlborough's Asian Population

2,214 residents of Marlborough, or 5.3% of the population, identify as Asian. The share of Asian residents in Marlborough is comparable to the share in Massachusetts overall, where 7.3% of the population is Asian. Marlborough ranks 46th statewide in terms of Asian residents as a share of the population, out of 248 places.

Since the 2020 Census, Marlborough's Asian population has declined by an estimated 9.6%. Asian residents' share of Marlborough's population has decreased from 5.9% to 5.3%.

Marlborough is more Asian than neighboring Hudson (2.2% Asian). Marlborough is less Asian than neighboring Cordaville (21.6% Asian), Northborough (6.2% Asian), Westborough (5.7% Asian), and Framingham (7.6% Asian).

Marlborough's Hispanic Population

7,477 residents of Marlborough, or 18.0% of the population, identify as Hispanic. The share of Hispanic residents in Marlborough is slightly higher than in Massachusetts overall, where 13.3% of the population is Hispanic. Marlborough ranks 26th statewide in terms of Hispanic residents as a share of the population, out of 248 places.

Since the 2020 Census, Marlborough's Hispanic population has grown by an estimated 12.8%. Hispanic residents' share of Marlborough's population has increased from 15.9% to 18.0%.

Marlborough is more Hispanic than neighboring Hudson (8.4% Hispanic), Cordaville (4.3% Hispanic), Northborough (6.2% Hispanic), and Westborough (8.4% Hispanic). Marlborough is less Hispanic than neighboring Framingham (18.7% Hispanic).

Marlborough's Native American/Other Population

1,635 residents of Marlborough, or 3.9% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Marlborough is slightly higher than in Massachusetts overall, where 1.3% of the population is Native American/Other. Marlborough ranks 4th statewide in terms of Native American/Other residents as a share of the population, out of 248 places.

Since the 2020 Census, Marlborough's Native American/Other population has declined by an estimated 39.7%. Native American/Other residents' share of Marlborough's population has decreased from 6.5% to 3.9%.

Marlborough is more Native American/Other than neighboring Hudson (2% Native American/Other), Cordaville (1.3% Native American/Other), and Northborough (3.3% Native American/Other). Marlborough is less Native American/Other than neighboring Westborough (4.6% Native American/Other), and Framingham (4.9% Native American/Other).

Marlborough's Multiracial Population

6,277 residents of Marlborough, or 15.1% of the population, identify as Multiracial. The share of Multiracial residents in Marlborough is higher than in Massachusetts overall, where 5.1% of the population is Multiracial. Marlborough ranks 7th statewide in terms of Multiracial residents as a share of the population, out of 248 places.

Since the 2020 Census, Marlborough's Multiracial population has grown by an estimated 56.5%. Multiracial residents' share of Marlborough's population has increased from 9.6% to 15.1%.

Marlborough is more Multiracial than neighboring Hudson (7.1% Multiracial), Cordaville (6.2% Multiracial), Northborough (3.6% Multiracial), Westborough (4.1% Multiracial), and Framingham (13.1% 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.