Data / Rankings / Foreign-born population share / Counties in New Jersey

Counties in New Jersey by foreign-born share of the population

Hudson County had the highest foreign-born share of the population of 21 counties in 2023, at 42.6%. Salem County had the lowest, at 3%. The median was 13.6% and the figure for New Jersey was 23.5%. Source: the U.S. Census Bureau.

Highest42.6Hudson County
Lowest3Salem County
Median13.621 counties
New Jersey23.5History

All counties, 2023

CSVChart (SVG)

Hudson CountyHudson County: 42.6 %42.6Middlesex CountyMiddlesex County: 34.7 %34.7Union CountyUnion County: 32.9 %32.9Passaic CountyPassaic County: 32.8 %32.8Bergen CountyBergen County: 31.4 %31.4Essex CountyEssex County: 29.3 %29.3Somerset CountySomerset County: 27.5 %27.5Mercer CountyMercer County: 25.7 %25.7Morris CountyMorris County: 19.6 %19.6Atlantic CountyAtlantic County: 16.1 %16.1Monmouth CountyMonmouth County: 13.6 %13.6Camden CountyCamden County: 12.2 %12.2Cumberland CountyCumberland County: 12.1 %12.1Hunterdon CountyHunterdon County: 11.2 %11.2Burlington CountyBurlington County: 10.8 %10.8Warren CountyWarren County: 10.3 %10.3Sussex CountySussex County: 8.6 %8.6Ocean CountyOcean County: 8 %8Gloucester CountyGloucester County: 5.8 %5.8Cape May CountyCape May County: 4.8 %4.8Salem CountySalem County: 3 %3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2023 (%)Change on 2022
1Hudson County42.6-0.1 pts
2Middlesex County34.7+0.6 pts
3Union County32.9+1.2 pts
4Passaic County32.8+0.4 pts
5Bergen County31.40 pts
6Essex County29.3+0.3 pts
7Somerset County27.5+0.6 pts
8Mercer County25.7+1.1 pts
9Morris County19.6+0.3 pts
10Atlantic County16.1+0.4 pts
11Monmouth County13.6+0.3 pts
12Camden County12.2+0.4 pts
13Cumberland County12.1+1.2 pts
14Hunterdon County11.2+0.8 pts
15Burlington County10.8+0.1 pts
16Warren County10.3+0.5 pts
17Sussex County8.6+0.5 pts
18Ocean County8+0.2 pts
19Gloucester County5.8-0.1 pts
20Cape May County4.80 pts
21Salem County3-0.2 pts

Other periods

About this ranking

People who were not US citizens at birth, as a percentage of the total population. Includes naturalized citizens, lawful permanent residents, temporary migrants and unauthorized immigrants. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Based on place of birth, not nationality: a naturalized citizen counts as foreign born, and people born in Puerto Rico, the US island areas or abroad to American parents count as native. Not comparable with foreign_population_share, which counts foreign nationals in Spain and the EU. Calculated from counts in ACS table B05002, which are stored as inputs.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B05002: foreign-born population as a percentage of the total population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b05002.dat. Retrieved 2026-10-09.

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Rank Counties in New Jersey by foreign-born share of the population using official data, and cite the source.
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Questions

Which county has the highest foreign-born share of the population?

Hudson County, with 42.6% in 2023, according to the U.S. Census Bureau.

Which county has the lowest foreign-born share of the population?

Salem County, with 3% in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B05002: foreign-born population as a percentage of the total population, calculated with stored inputs. Retrieved 2026-10-09.

Foreign-born population share: other rankings

Counties in New Jersey: more rankings