Colonia, NJ Demographics

A map of Colonia's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	10,484	11,426	56.4%	61.4%
Hispanic	3,254	2,551	17.5%	13.7%
Asian	2,891	3,049	15.6%	16.4%
Black	948	966	5.1%	5.2%
Multiracial	666	499	3.6%	2.7%
Native American/Other	344	118	1.9%	0.6%

Colonia, New Jersey has an estimated population of 18,587, a less than 1% change from the 18,609 recorded in the 2020 Census. The population is 56.4% White, 17.5% Hispanic, 15.6% Asian, 5.1% Black, 3.6% Multiracial, and 1.9% Native American/Other. This demographic dot map shows the population of Colonia, with one dot drawn for each person counted by the Census, color-coded by race.

Colonia 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 Colonia, that probability was 57.4% in 2020 and 62.3% in the most recent ACS estimates.

Colonia is ranked the 65th 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). Colonia was ranked the 64th most populous place in the 2020 Census.

Colonia's White Population

10,484 residents of Colonia, or 56.4% of the population, identify as White. The share of White residents in Colonia is higher than in New Jersey overall, where 50.9% of the population is White. Colonia ranks 491st statewide in terms of White residents as a share of the population, out of 700 places.

Since the 2020 Census, Colonia's White population has declined by an estimated 8.2%. White residents' share of Colonia's population has decreased from 61.4% to 56.4%.

Colonia is more White than neighboring Iselin (23.1% White), Rahway (29.3% White), Menlo Park Terrace (26.9% White), Avenel (27.9% White), and Woodbridge (38% White).

Colonia's Black Population

948 residents of Colonia, or 5.1% of the population, identify as Black. The share of Black residents in Colonia is lower than in New Jersey overall, where 12.2% of the population is Black. Colonia ranks 225th statewide in terms of Black residents as a share of the population, out of 700 places.

Since the 2020 Census, Colonia's Black population has declined by an estimated 1.9%. Black residents' share of Colonia's population has remained roughly unchanged at 5.1%.

Colonia is less Black than neighboring Iselin (10.8% Black), Rahway (30.8% Black), Menlo Park Terrace (13.1% Black), Avenel (26.7% Black), and Woodbridge (9.4% Black).

Colonia's Asian Population

2,891 residents of Colonia, or 15.6% of the population, identify as Asian. The share of Asian residents in Colonia is higher than in New Jersey overall, where 10% of the population is Asian. Colonia ranks 84th statewide in terms of Asian residents as a share of the population, out of 700 places.

Since the 2020 Census, Colonia's Asian population has declined by an estimated 5.2%. Asian residents' share of Colonia's population has decreased from 16.4% to 15.6%.

Colonia is more Asian than neighboring Rahway (5.7% Asian). Colonia is less Asian than neighboring Iselin (48.3% Asian), Menlo Park Terrace (31.1% Asian), Avenel (16.2% Asian), and Woodbridge (25.2% Asian).

Colonia's Hispanic Population

3,254 residents of Colonia, or 17.5% of the population, identify as Hispanic. The share of Hispanic residents in Colonia is slightly lower than in New Jersey overall, where 22.5% of the population is Hispanic. Colonia ranks 220th statewide in terms of Hispanic residents as a share of the population, out of 700 places.

Since the 2020 Census, Colonia's Hispanic population has grown by an estimated 27.6%. Hispanic residents' share of Colonia's population has increased from 13.7% to 17.5%.

Colonia is more Hispanic than neighboring Iselin (14.8% Hispanic). Colonia is less Hispanic than neighboring Rahway (27.4% Hispanic), Menlo Park Terrace (22% Hispanic), Avenel (25.3% Hispanic), and Woodbridge (24.6% Hispanic).

Colonia's Native American/Other Population

344 residents of Colonia, or 1.9% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Colonia is comparable to the share in New Jersey overall, where 0.9% of the population is Native American/Other. Colonia ranks 294th statewide in terms of Native American/Other residents as a share of the population, out of 700 places.

Since the 2020 Census, Colonia's Native American/Other population has grown by an estimated 191.5%. Native American/Other residents' share of Colonia's population has increased from 0.6% to 1.9%.

Colonia is more Native American/Other than neighboring Iselin (0.8% Native American/Other), Rahway (1.4% Native American/Other), Menlo Park Terrace (0.8% Native American/Other), Avenel (0.2% Native American/Other), and Woodbridge (0% Native American/Other).

Colonia's Multiracial Population

666 residents of Colonia, or 3.6% of the population, identify as Multiracial. The share of Multiracial residents in Colonia is comparable to the share in New Jersey overall, where 3.5% of the population is Multiracial. Colonia ranks 463rd statewide in terms of Multiracial residents as a share of the population, out of 700 places.

Since the 2020 Census, Colonia's Multiracial population has grown by an estimated 33.5%. Multiracial residents' share of Colonia's population has increased from 2.7% to 3.6%.

Colonia is more Multiracial than neighboring Iselin (2.2% Multiracial), and Woodbridge (2.8% Multiracial). Colonia is less Multiracial than neighboring Rahway (5.4% Multiracial), and Menlo Park Terrace (6.2% 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.