Westfield New Jersey ZIP Codes
Westfield holds 2 ZIP codes, all inside one county and one postal prefix.
Every ZIP code in Westfield
| ZIP code | County |
|---|---|
| 07090 | Union County |
| 07091 | Union County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Westfield codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Westfield. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Westfield ZIP code begins 070. Those first three digits identify the sectional center facility that processes mail for this part of New Jersey. Statewide that range covers 88 ZIP codes, so Westfield accounts for 2% of it.
Every New Jersey ZIP prefix and the region it covers →
Area codes covering Westfield
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Westfield occupies.
Westfield New Jersey area codes in full →
Where Westfield's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Westfield
| City | Distance | ZIP codes |
|---|---|---|
| Garwood New Jersey ZIP codes | 1.1 mi | 1 ZIP code |
| Mountainside New Jersey ZIP codes | 2.2 mi | 1 ZIP code |
| Fanwood New Jersey ZIP codes | 2.3 mi | 1 ZIP code |
| Kenilworth New Jersey ZIP codes | 3.4 mi | 1 ZIP code |
| Roselle Park New Jersey ZIP codes | 4.1 mi | 1 ZIP code |
| Roselle New Jersey ZIP codes | 4.4 mi | 1 ZIP code |
| Rahway New Jersey ZIP codes | 4.5 mi | 1 ZIP code |
| Plainfield New Jersey ZIP codes | 4.5 mi | 4 ZIP codes |
Straight-line distance between place reference points, not driving distance.