Ranking of New Jersey Counties By Population with Other Groups Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 3.50M people in New Jersey with Other Groups ancestry. Among all New Jersey counties, Hudson County had the highest population with Other Groups ancestry (423.33K), followed by Middlesex County (417.81K), and Essex County (411.13K).

The chart and table below shows the top 10 counties with high number of people with Other Groups ancestry.

You can see similar information for other states and for other ancestry groups in New Jersey.

Data Source: US Census Bureau.
Ranking of New Jersey Counties By Population with Other Groups Ancestry in 2021
Hudson County
Middlesex County
Essex County
Bergen County
Union County
Passaic County
Camden County
Mercer County
Monmouth County
Morris County
Ranking of New Jersey Counties By Population with Other Groups Ancestry in 2021
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Rank County Population
1 Hudson County 423326
2 Middlesex County 417808
3 Essex County 411134
4 Bergen County 376855
5 Union County 267051
6 Passaic County 266274
7 Camden County 187602
8 Mercer County 163841
9 Monmouth County 145597
10 Morris County 139740
11 Somerset County 131872
12 Ocean County 124402
13 Burlington County 123001
14 Atlantic County 103635
15 Cumberland County 70782
16 Gloucester County 59693
17 Sussex County 21601
18 Hunterdon County 20837
19 Warren County 18617
20 Salem County 14970
21 Cape May County 14657