ZIP Code 07831 is located in Changewater New Jersey. 07831 is entirely within Warren County. Regionally, 07831 is located in the Northern New Jersey Area.
| ZIP Code Name | Changewater |
| Primary County | Warren County |
| ZIP Code Type | Standard |
| Population (2022) | 30 |
| Current Time | EST |
| Population | 30 |
| Population Density | 245 People per Square Mile |
| Current Unemployment Rate (November 2024) | 4.1% |
| Coordinates | 40.73591614,-74.94287872 |
| Region | Northern New Jersey Area |
| Metropolitan/Micropolitan Stat Area | Allentown-Bethlehem-Easton, PA-NJ |
| Time Zone | Eastern Standard Time |
| IANA Timezone | America/New_York |
| Area | 0.12232690 Square Miles |