Demographics & People — Greenwich CDP (Cumberland County), New Jersey
Population Overview
Population (Census)
161
Estimated 2026
~200
Median Age
40.3
Total Households
55
Family Households
41
Average Household Size
2.93
Diversity Index
0.0 (relatively homogeneous)
Race & Ethnicity
White
161
Black or African American
0
Asian
0
Hispanic or Latino
0
Heritage & Ancestry
Group
Count
German
93
Irish
66
Unclassified or not reported
17
Other groups
16
English
12
Italian
10
Scandinavian
9
Welsh
8
Dutch
8
Polish
8
Language
English Only
161
Spanish
0
Population 5+
161
Veterans
Veterans
19
Population 18+
130
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Greenwich CDP (Cumberland County), New Jersey.