ZIP Code 08870 is located in Readington New Jersey. 08870 is entirely within Hunterdon County. Regionally, it is located in the Northern New Jersey Area.
| ZIP Code Name | Readington |
| Primary County | Hunterdon County |
| ZIP Code Type | PO Box |
| Current Time | EDT |
| Coordinates | 40.57090759,-74.73889160 |
| Adjacent ZIP Codes | |
| Region | Northern New Jersey Area |
| Metropolitan/Micropolitan Stat Area | New York-Newark-Jersey City, NY-NJ-PA |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |