The state of New Jersey, USA is currently served by a total of 10 area codes:
These New Jersey area codes overlay (cover the same geographic area). The first code listed is the parent code. Overlay area codes are added when no more phone numbers are available in an existing Numbering Plan Area.
| City | County | Area code(s) |
|---|---|---|
| Atlantic City | Atlantic | 609/640 |
| Bayonne | Hudson | 201/551 |
| Camden | Camden | 856 |
| Clifton | Passaic | 973/862 |
| East Orange | Essex | 973/862 |
| Elizabeth | Union | 908 |
| Fair Lawn | Bergen | 201/551 |
| Fort Lee | Bergen | 201/551 |
| Garfield | Bergen | 973/862 |
| Hackensack | Bergen | 201/551 |
| Hoboken | Hudson | 201/551 |
| Jersey City | Hudson | 201/551 |
| Kearny | Hudson | 201/551 |
| Lakewood | Ocean | 732/848 |
| Linden | Union | 908 |
| Long Branch | Monmouth | 732/848 |
| Manalapan | Monmouth | 732/848 |
| New Brunswick | Middlesex | 732/848 |
| Newark | Essex | 973/862 |
| Passaic | Passaic | 973/862 |
| Paterson | Passaic | 973/862 |
| Perth Amboy | Middlesex | 732/848 |
| Plainfield | Union | 908 |
| Princeton | Mercer | 609/640 |
| Sayreville | Middlesex | 732/848 |
| Toms River | Ocean | 732/848 |
| Trenton | Mercer | 609/640 |
| Union City | Hudson | 201/551 |
| Vineland | Cumberland | 856 |
| West New York | Hudson | 201/551 |