Monmouth Junction, NJ Demographics

A map of Monmouth Junction's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Asian	5,475	5,110	59.9%	57.4%
White	2,461	2,426	26.9%	27.3%
Hispanic	436	404	4.8%	4.5%
Black	427	740	4.7%	8.3%
Multiracial	278	150	3.0%	1.7%
Native American/Other	64	65	0.7%	0.7%

Monmouth Junction, New Jersey has an estimated population of 9,141, a slight increase from the 8,895 recorded in the 2020 Census. The population is 59.9% Asian, 26.9% White, 4.8% Hispanic, 4.7% Black, 3.0% Multiracial, and 0.7% Native American/Other. This demographic dot map shows the population of Monmouth Junction, with one dot drawn for each person counted by the Census, color-coded by race.

Monmouth Junction has become 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 Monmouth Junction, that probability was 58.6% in 2020 and 56.3% in the most recent ACS estimates.

Monmouth Junction is ranked the 178th 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). Monmouth Junction was ranked the 180th most populous place in the 2020 Census.

Monmouth Junction's White Population

2,461 residents of Monmouth Junction, or 26.9% of the population, identify as White. The share of White residents in Monmouth Junction is significantly lower than in New Jersey overall, where 50.9% of the population is White. Monmouth Junction ranks 650th statewide in terms of White residents as a share of the population, out of 700 places.

Since the 2020 Census, Monmouth Junction's White population has grown by an estimated 1.4%. White residents' share of Monmouth Junction's population has remained roughly unchanged at 26.9%.

Monmouth Junction is more White than neighboring Heathcote (21.3% White), Princeton Meadows (23% White), and Deans (20.3% White). Monmouth Junction is less White than neighboring Kendall Park (46.3% White), and Dayton (31.4% White).

Monmouth Junction's Black Population

427 residents of Monmouth Junction, or 4.7% of the population, identify as Black. The share of Black residents in Monmouth Junction is lower than in New Jersey overall, where 12.2% of the population is Black. Monmouth Junction ranks 152nd statewide in terms of Black residents as a share of the population, out of 700 places.

Since the 2020 Census, Monmouth Junction's Black population has declined by an estimated 42.3%. Black residents' share of Monmouth Junction's population has decreased from 8.3% to 4.7%.

Monmouth Junction is more Black than neighboring Kendall Park (3.5% Black), and Deans (0% Black). Monmouth Junction is less Black than neighboring Heathcote (5.8% Black), Princeton Meadows (7.9% Black), and Dayton (6% Black).

Monmouth Junction's Asian Population

5,475 residents of Monmouth Junction, or 59.9% of the population, identify as Asian. The share of Asian residents in Monmouth Junction is significantly higher than in New Jersey overall, where 10% of the population is Asian. Monmouth Junction ranks 7th statewide in terms of Asian residents as a share of the population, out of 700 places.

Since the 2020 Census, Monmouth Junction's Asian population has grown by an estimated 7.1%. Asian residents' share of Monmouth Junction's population has increased from 57.4% to 59.9%.

Monmouth Junction is more Asian than neighboring Kendall Park (35.3% Asian), and Dayton (50.9% Asian). Monmouth Junction is less Asian than neighboring Heathcote (62.2% Asian), Princeton Meadows (61.4% Asian), and Deans (75% Asian).

Monmouth Junction's Hispanic Population

436 residents of Monmouth Junction, or 4.8% of the population, identify as Hispanic. The share of Hispanic residents in Monmouth Junction is significantly lower than in New Jersey overall, where 22.5% of the population is Hispanic. Monmouth Junction ranks 592nd statewide in terms of Hispanic residents as a share of the population, out of 700 places.

Since the 2020 Census, Monmouth Junction's Hispanic population has grown by an estimated 7.9%. Hispanic residents' share of Monmouth Junction's population has remained roughly unchanged at 4.8%.

Monmouth Junction is more Hispanic than neighboring Deans (4.7% Hispanic). Monmouth Junction is less Hispanic than neighboring Heathcote (6.8% Hispanic), Kendall Park (9.9% Hispanic), Princeton Meadows (5.4% Hispanic), and Dayton (6.6% Hispanic).

Monmouth Junction's Native American/Other Population

64 residents of Monmouth Junction, 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 Monmouth Junction is comparable to the share in New Jersey overall, where 0.9% of the population is Native American/Other. Monmouth Junction ranks 237th statewide in terms of Native American/Other residents as a share of the population, out of 700 places.

Since the 2020 Census, Monmouth Junction's Native American/Other population has declined by an estimated 1.5%. Native American/Other residents' share of Monmouth Junction's population has remained roughly unchanged at 0.7%.

Monmouth Junction is more Native American/Other than neighboring Kendall Park (0.5% Native American/Other), Princeton Meadows (0% Native American/Other), and Deans (0% Native American/Other). Monmouth Junction is less Native American/Other than neighboring Heathcote (3.5% Native American/Other).

Monmouth Junction's Multiracial Population

278 residents of Monmouth Junction, or 3.0% of the population, identify as Multiracial. The share of Multiracial residents in Monmouth Junction is comparable to the share in New Jersey overall, where 3.5% of the population is Multiracial. Monmouth Junction ranks 630th statewide in terms of Multiracial residents as a share of the population, out of 700 places.

Since the 2020 Census, Monmouth Junction's Multiracial population has grown by an estimated 85.3%. Multiracial residents' share of Monmouth Junction's population has increased from 1.7% to 3.0%.

Monmouth Junction is more Multiracial than neighboring Heathcote (0.5% Multiracial), Princeton Meadows (2.3% Multiracial), and Deans (0% Multiracial). Monmouth Junction is less Multiracial than neighboring Kendall Park (4.4% Multiracial), and Dayton (4.5% 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.