
Greenwich township
- County:
- Cumberland County
- County Seat:
- No
- Area (mi²):
- 17.772
- State:
- New Jersey
Greenwich township is located in Cumberland County, New Jersey. Greenwich township has a 2025 population of 765. Greenwich township is currently growing at a rate of 0.13% annually but its population has decreased by -0.13% since the most recent census, which recorded a population of 766 in 2020.
The average household income in Greenwich township is $108,103 with a poverty rate of 7.2%. The median age in Greenwich township is 49.5 years: 49.2 years for males, and 51 years for females.