
Greenwich
- County:
- Cumberland County
- County Seat:
- No
- Area (mi²):
- 0.907
- State:
- New Jersey
Greenwich is a CDP located in Cumberland County, New Jersey. Greenwich has a 2025 population of 2,894. Greenwich is currently growing at a rate of 0.35% annually and its population has increased by 5.35% since the most recent census, which recorded a population of 2,747 in 2020.
The average household income in Greenwich is $183,700 with a poverty rate of 0.84%. The median age in Greenwich is 38.7 years: 39.7 years for males, and 38.4 years for females.