Princeton New Jersey ZIP Codes

Princeton holds 5 ZIP codes, all inside one county and one postal prefix.

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Princeton codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Princeton. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

Every Princeton ZIP code begins 085. Those first three digits identify the sectional center facility that processes mail for this part of New Jersey. Statewide that range covers 37 ZIP codes, so Princeton accounts for 14% of it.

Every New Jersey ZIP prefix and the region it covers →

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Princeton occupies.

• 609 Area code 609
• 640 Area code 640

Princeton New Jersey area codes in full →

Straight-line distance between place reference points, not driving distance.