Sussex County Demographics

A map of Sussex County's Population by Race

Sussex County, New Jersey has an estimated population of 145,807, a slight increase from the 144,221 recorded in the 2020 Census. The population is 79.7% White, 11.9% Hispanic, 4.0% Multiracial, 2.0% Asian, 1.7% Black, and 0.7% Native American/Other. This demographic dot map shows the population of Sussex County, with one dot drawn for each person counted by the Census, color-coded by race.

Sussex has become more 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 Sussex County, that probability was 31.6% in 2020 and 34.8% in the most recent ACS estimates.

Sussex County is ranked the 17th most populous county in New Jersey, out of 21 counties. Sussex County was ranked the 17th most populous county in the 2020 Census.

Sussex County's White Population

116,218 residents of Sussex County, or 79.7% of the population, identify as White. The share of White residents in Sussex County is significantly higher than in New Jersey overall, where 50.9% of the population is White. Sussex County ranks 2nd statewide in terms of White residents as a share of the population, out of 21 counties.

Since the 2020 Census, Sussex County's White population has declined by an estimated 1.7%. White residents' share of Sussex County's population has decreased from 82.0% to 79.7%.

Sussex County is more White than neighboring Morris County (65.8% White), Pike County (76.9% White), Passaic County (37.9% White), Warren County (74.6% White), and Orange County (57.9% White).

Sussex County's Black Population

2,490 residents of Sussex County, or 1.7% of the population, identify as Black. The share of Black residents in Sussex County is considerably lower than in New Jersey overall, where 12.2% of the population is Black. Sussex County ranks 21st statewide in terms of Black residents as a share of the population, out of 21 counties.

Since the 2020 Census, Sussex County's Black population has declined by an estimated 12.9%. Black residents' share of Sussex County's population has remained roughly unchanged at 1.7%.

Sussex County is less Black than neighboring Morris County (3% Black), Pike County (5.6% Black), Passaic County (9.7% Black), Warren County (5.6% Black), and Orange County (10.5% Black).

Sussex County's Asian Population

2,869 residents of Sussex County, or 2.0% of the population, identify as Asian. The share of Asian residents in Sussex County is lower than in New Jersey overall, where 10% of the population is Asian. Sussex County ranks 17th statewide in terms of Asian residents as a share of the population, out of 21 counties.

Since the 2020 Census, Sussex County's Asian population has declined by an estimated 1.7%. Asian residents' share of Sussex County's population has remained roughly unchanged at 2.0%.

Sussex County is more Asian than neighboring Pike County (1.3% Asian). Sussex County is less Asian than neighboring Morris County (10.7% Asian), Passaic County (5.4% Asian), Warren County (3% Asian), and Orange County (2.8% Asian).

Sussex County's Hispanic Population

17,355 residents of Sussex County, or 11.9% of the population, identify as Hispanic. The share of Hispanic residents in Sussex County is considerably lower than in New Jersey overall, where 22.5% of the population is Hispanic. Sussex County ranks 17th statewide in terms of Hispanic residents as a share of the population, out of 21 counties.

Since the 2020 Census, Sussex County's Hispanic population has grown by an estimated 21.3%. Hispanic residents' share of Sussex County's population has increased from 9.9% to 11.9%.

Sussex County is less Hispanic than neighboring Morris County (16% Hispanic), Pike County (12.4% Hispanic), Passaic County (44.3% Hispanic), Warren County (13% Hispanic), and Orange County (23.9% Hispanic).

Sussex County's Native American/Other Population

994 residents of Sussex County, 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 Sussex County is comparable to the share in New Jersey overall, where 0.9% of the population is Native American/Other. Sussex County ranks 16th statewide in terms of Native American/Other residents as a share of the population, out of 21 counties.

Since the 2020 Census, Sussex County's Native American/Other population has grown by an estimated 14.5%. Native American/Other residents' share of Sussex County's population has remained roughly unchanged at 0.7%.

Sussex County is more Native American/Other than neighboring Pike County (0.3% Native American/Other), Passaic County (0.6% Native American/Other), and Warren County (0.3% Native American/Other). Sussex County is less Native American/Other than neighboring Morris County (0.8% Native American/Other), and Orange County (0.9% Native American/Other).

Sussex County's Multiracial Population

5,881 residents of Sussex County, or 4.0% of the population, identify as Multiracial. The share of Multiracial residents in Sussex County is comparable to the share in New Jersey overall, where 3.5% of the population is Multiracial. Sussex County ranks 7th statewide in terms of Multiracial residents as a share of the population, out of 21 counties.

Since the 2020 Census, Sussex County's Multiracial population has grown by an estimated 17.2%. Multiracial residents' share of Sussex County's population has increased from 3.5% to 4.0%.

Sussex County is more Multiracial than neighboring Morris County (3.7% Multiracial), Pike County (3.4% Multiracial), Passaic County (2% Multiracial), and Warren County (3.5% 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.