Middlesex, NJ Demographics

A map of Middlesex's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	7,944	8,331	54.2%	56.9%
Hispanic	3,562	3,751	24.3%	25.6%
Asian	2,028	1,159	13.8%	7.9%
Black	765	902	5.2%	6.2%
Multiracial	245	414	1.7%	2.8%
Native American/Other	101	79	0.7%	0.5%

Middlesex, New Jersey has an estimated population of 14,645, a less than 1% change from the 14,636 recorded in the 2020 Census. The population is 54.2% White, 24.3% Hispanic, 13.8% Asian, 5.2% Black, 1.7% Multiracial, and 0.7% Native American/Other. This demographic dot map shows the population of Middlesex, with one dot drawn for each person counted by the Census, color-coded by race.

Middlesex has become more racially diverse since the 2020 Census. It is 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 Middlesex, that probability was 59.9% in 2020 and 62.4% in the most recent ACS estimates.

Middlesex is ranked the 88th 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). Middlesex was ranked the 86th most populous place in the 2020 Census.

Middlesex's White Population

7,944 residents of Middlesex, or 54.2% of the population, identify as White. The share of White residents in Middlesex is slightly higher than in New Jersey overall, where 50.9% of the population is White. Middlesex ranks 520th statewide in terms of White residents as a share of the population, out of 700 places.

Since the 2020 Census, Middlesex's White population has declined by an estimated 4.6%. White residents' share of Middlesex's population has decreased from 56.9% to 54.2%.

Middlesex is more White than neighboring South Bound Brook (38.1% White), Bound Brook (30% White), Dunellen (39.7% White), and Franklin Center (29.8% White). Middlesex is less White than neighboring Rutgers University-Busch Campus (75.1% White).

Middlesex's Black Population

765 residents of Middlesex, or 5.2% of the population, identify as Black. The share of Black residents in Middlesex is lower than in New Jersey overall, where 12.2% of the population is Black. Middlesex ranks 203rd statewide in terms of Black residents as a share of the population, out of 700 places.

Since the 2020 Census, Middlesex's Black population has declined by an estimated 15.2%. Black residents' share of Middlesex's population has decreased from 6.2% to 5.2%.

Middlesex is more Black than neighboring Dunellen (4.9% Black), and Rutgers University-Busch Campus (4% Black). Middlesex is less Black than neighboring South Bound Brook (16.1% Black), Bound Brook (7.1% Black), and Franklin Center (23.3% Black).

Middlesex's Asian Population

2,028 residents of Middlesex, or 13.8% of the population, identify as Asian. The share of Asian residents in Middlesex is slightly higher than in New Jersey overall, where 10% of the population is Asian. Middlesex ranks 184th statewide in terms of Asian residents as a share of the population, out of 700 places.

Since the 2020 Census, Middlesex's Asian population has grown by an estimated 75.0%. Asian residents' share of Middlesex's population has increased from 7.9% to 13.8%.

Middlesex is more Asian than neighboring South Bound Brook (4.4% Asian), Bound Brook (2.4% Asian), Dunellen (6.1% Asian), and Rutgers University-Busch Campus (9.9% Asian). Middlesex is less Asian than neighboring Franklin Center (28.1% Asian).

Middlesex's Hispanic Population

3,562 residents of Middlesex, or 24.3% of the population, identify as Hispanic. The share of Hispanic residents in Middlesex is comparable to the share in New Jersey overall, where 22.5% of the population is Hispanic. Middlesex ranks 87th statewide in terms of Hispanic residents as a share of the population, out of 700 places.

Since the 2020 Census, Middlesex's Hispanic population has declined by an estimated 5.0%. Hispanic residents' share of Middlesex's population has decreased from 25.6% to 24.3%.

Middlesex is more Hispanic than neighboring Franklin Center (13.9% Hispanic), and Rutgers University-Busch Campus (9.2% Hispanic). Middlesex is less Hispanic than neighboring South Bound Brook (35.3% Hispanic), Bound Brook (58.6% Hispanic), and Dunellen (45.2% Hispanic).

Middlesex's Native American/Other Population

101 residents of Middlesex, or 0.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Middlesex is comparable to the share in New Jersey overall, where 0.9% of the population is Native American/Other. Middlesex ranks 369th statewide in terms of Native American/Other residents as a share of the population, out of 700 places.

Since the 2020 Census, Middlesex's Native American/Other population has grown by an estimated 27.8%. Native American/Other residents' share of Middlesex's population has remained roughly unchanged at 0.7%.

Middlesex is more Native American/Other than neighboring Bound Brook (0.5% Native American/Other), Dunellen (0% Native American/Other), and Rutgers University-Busch Campus (0% Native American/Other). Middlesex is less Native American/Other than neighboring Franklin Center (3.4% Native American/Other).

Middlesex's Multiracial Population

245 residents of Middlesex, or 1.7% of the population, identify as Multiracial. The share of Multiracial residents in Middlesex is comparable to the share in New Jersey overall, where 3.5% of the population is Multiracial. Middlesex ranks 436th statewide in terms of Multiracial residents as a share of the population, out of 700 places.

Since the 2020 Census, Middlesex's Multiracial population has declined by an estimated 40.8%. Multiracial residents' share of Middlesex's population has decreased from 2.8% to 1.7%.

Middlesex is more Multiracial than neighboring Bound Brook (1.4% Multiracial), and Franklin Center (1.6% Multiracial). Middlesex is less Multiracial than neighboring South Bound Brook (5.4% Multiracial), Dunellen (4% Multiracial), and Rutgers University-Busch Campus (1.8% 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.