| Official Name: | Greenwich, New Jersey |
| Settlement Type: | Census-designated place |
| Pushpin Map: | USA New Jersey Cumberland County#USA New Jersey#USA |
| Pushpin Label: | Greenwich CDP |
| Pushpin Map Caption: | Location in Cumberland County##Location in New Jersey##Location in the United States |
| Pushpin Relief: | yes |
| Coordinates: | 39.3894°N -75.3389°W |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Cumberland |
| Subdivision Type3: | Township |
| Subdivision Name3: | Greenwich |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 0.84 |
| Area Land Sq Mi: | 0.84 |
| Area Water Sq Mi: | 0.00 |
| Area Total Km2: | 2.18 |
| Area Land Km2: | 2.17 |
| Area Water Km2: | 0.01 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 251 |
| Population Density Km2: | 115.44 |
| Population Density Sq Mi: | 299.17 |
| Unit Pref: | Imperial |
| Timezone: | Eastern (EST) |
| Utc Offset: | −05:00 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | −04:00 |
| Elevation Ft: | 14 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 08323 |
| Area Code: | 856 |
| Blank Name: | FIPS code |
| Blank Info: | [3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2806092 |
Greenwich is an unincorporated community and census-designated place[4] (CDP) in Cumberland County, in the U.S. state of New Jersey. It is in the western part of the county, in the southeast part of Greenwich Township, on the northwest side of the tidal Cohansey River, 4miles northeast of its mouth at Delaware Bay. The community is 7miles southwest of Bridgeton, the county seat.
Greenwich was first listed as a CDP prior to the 2020 census. The area along both sides of Ye Greate Street, the main street in the community, comprises the Greenwich Historic District, listed on the National Register of Historic Places. The district continues north to the community of Othello.
As of the 2020 United States census, the population was 251.[2]