Union County ZIP Codes
Union County is a county of New Jersey.
- ZIP codes
- 31
- Cities & towns
- 23
- Area codes
- 7
- Land area
- 103 sq mi
Every ZIP code in Union County
| ZIP code | City |
|---|---|
| 07016 | Cranford |
| 07023 | Fanwood |
| 07027 | Garwood |
| 07033 | Kenilworth |
| 07036 | Linden |
| 07060 | Plainfield |
| 07061 | Plainfield |
| 07062 | Plainfield |
| 07063 | Plainfield |
| 07065 | Rahway |
| 07066 | Clark |
| 07069 | Watchung |
| 07076 | Scotch Plains |
| 07081 | Springfield |
| 07083 | Union |
| 07088 | Vauxhall |
| 07090 | Westfield |
| 07091 | Westfield |
| 07092 | Mountainside |
| 07201 | Elizabeth |
| 07202 | Elizabeth |
| 07203 | Roselle |
| 07204 | Roselle Park |
| 07205 | Hillside |
| 07206 | Elizabethport |
| 07207 | Elizabeth |
| 07208 | Elizabeth |
| 07901 | Summit |
| 07902 | Summit |
| 07922 | Berkeley Heights |
| 07974 | New Providence |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Union County codes above are listed without a column we would have to invent.
Cities and towns in Union County
A further 8 places in Union County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.
Area codes covering Union County
Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.
- 201 Area code 201
- 551 Area code 551
- 732 Area code 732
- 848 Area code 848
- 862 Area code 862
- 908 Area code 908
- 973 Area code 973
Where Union County's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope every ZIP code recorded in Union County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated . The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.