Hillsborough, NJ Demographics

A map of Hillsborough's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	13,023	12,820	57.7%	57.7%
Asian	4,472	4,644	19.8%	20.9%
Hispanic	3,017	2,550	13.4%	11.5%
Multiracial	989	759	4.4%	3.4%
Black	966	1,299	4.3%	5.8%
Native American/Other	118	142	0.5%	0.6%

Hillsborough, New Jersey has an estimated population of 22,585, a slight increase from the 22,214 recorded in the 2020 Census. The population is 57.7% White, 19.8% Asian, 13.4% Hispanic, 4.4% Multiracial, 4.3% Black, and 0.5% Native American/Other. This demographic dot map shows the population of Hillsborough, with one dot drawn for each person counted by the Census, color-coded by race.

Hillsborough is about as racially diverse as it was in 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 Hillsborough, that probability was 60.5% in 2020 and 60.7% in the most recent ACS estimates.

Hillsborough is ranked the 49th 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). Hillsborough was ranked the 50th most populous place in the 2020 Census.

Hillsborough's White Population

13,023 residents of Hillsborough, or 57.7% of the population, identify as White. The share of White residents in Hillsborough is higher than in New Jersey overall, where 50.9% of the population is White. Hillsborough ranks 513th statewide in terms of White residents as a share of the population, out of 700 places.

Since the 2020 Census, Hillsborough's White population has grown by an estimated 1.6%. White residents' share of Hillsborough's population has remained roughly unchanged at 57.7%.

Hillsborough is more White than neighboring Belle Mead (24.8% White), Harlingen (51.3% White), and Blackwells Mills (53.8% White). Hillsborough is less White than neighboring Flagtown (78.4% White), and Millstone (61.5% White).

Hillsborough's Black Population

966 residents of Hillsborough, or 4.3% of the population, identify as Black. The share of Black residents in Hillsborough is lower than in New Jersey overall, where 12.2% of the population is Black. Hillsborough ranks 207th statewide in terms of Black residents as a share of the population, out of 700 places.

Since the 2020 Census, Hillsborough's Black population has declined by an estimated 25.6%. Black residents' share of Hillsborough's population has decreased from 5.8% to 4.3%.

Hillsborough is more Black than neighboring Belle Mead (0.5% Black), Harlingen (0% Black), and Millstone (2.9% Black). Hillsborough is less Black than neighboring Flagtown (6% Black), and Blackwells Mills (4.4% Black).

Hillsborough's Asian Population

4,472 residents of Hillsborough, or 19.8% of the population, identify as Asian. The share of Asian residents in Hillsborough is higher than in New Jersey overall, where 10% of the population is Asian. Hillsborough ranks 67th statewide in terms of Asian residents as a share of the population, out of 700 places.

Since the 2020 Census, Hillsborough's Asian population has declined by an estimated 3.7%. Asian residents' share of Hillsborough's population has decreased from 20.9% to 19.8%.

Hillsborough is more Asian than neighboring Flagtown (6.3% Asian), and Millstone (1.7% Asian). Hillsborough is less Asian than neighboring Belle Mead (64.2% Asian), Harlingen (42.3% Asian), and Blackwells Mills (29.7% Asian).

Hillsborough's Hispanic Population

3,017 residents of Hillsborough, or 13.4% of the population, identify as Hispanic. The share of Hispanic residents in Hillsborough is lower than in New Jersey overall, where 22.5% of the population is Hispanic. Hillsborough ranks 278th statewide in terms of Hispanic residents as a share of the population, out of 700 places.

Since the 2020 Census, Hillsborough's Hispanic population has grown by an estimated 18.3%. Hispanic residents' share of Hillsborough's population has increased from 11.5% to 13.4%.

Hillsborough is more Hispanic than neighboring Belle Mead (6.9% Hispanic), Flagtown (6.9% Hispanic), Harlingen (6.4% Hispanic), and Blackwells Mills (5.5% Hispanic). Hillsborough is less Hispanic than neighboring Millstone (26.7% Hispanic).

Hillsborough's Native American/Other Population

118 residents of Hillsborough, or 0.5% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Hillsborough is comparable to the share in New Jersey overall, where 0.9% of the population is Native American/Other. Hillsborough ranks 290th statewide in terms of Native American/Other residents as a share of the population, out of 700 places.

Since the 2020 Census, Hillsborough's Native American/Other population has declined by an estimated 16.9%. Native American/Other residents' share of Hillsborough's population has remained roughly unchanged at 0.5%.

Hillsborough is more Native American/Other than neighboring Flagtown (0% Native American/Other), Harlingen (0% Native American/Other), and Blackwells Mills (0% Native American/Other). Hillsborough is less Native American/Other than neighboring Belle Mead (1.6% Native American/Other), and Millstone (0.8% Native American/Other).

Hillsborough's Multiracial Population

989 residents of Hillsborough, or 4.4% of the population, identify as Multiracial. The share of Multiracial residents in Hillsborough is comparable to the share in New Jersey overall, where 3.5% of the population is Multiracial. Hillsborough ranks 288th statewide in terms of Multiracial residents as a share of the population, out of 700 places.

Since the 2020 Census, Hillsborough's Multiracial population has grown by an estimated 30.3%. Multiracial residents' share of Hillsborough's population has increased from 3.4% to 4.4%.

Hillsborough is more Multiracial than neighboring Belle Mead (2% Multiracial), Flagtown (2.4% Multiracial), and Harlingen (0% Multiracial). Hillsborough is less Multiracial than neighboring Millstone (6.4% Multiracial), and Blackwells Mills (6.5% 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.