| Place Name | Fairfield |
| Place Type | Unincorporated |
| ZIP Code(s) | 07004 |
| County | Essex County |
| Area Code(s) | 862,973 |
| Timezone | Eastern Standard Time (EST) |
| Population () | |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New Jersey 11th |
| State Assembly Districts | 40 |
| State Senate Districts | 40 |