Allentown Pennsylvania ZIP Codes

Allentown holds 8 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Allentown codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Allentown. 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 Allentown ZIP code begins 181. Those first three digits identify the sectional center facility that processes mail for this part of Pennsylvania. No other Pennsylvania community draws on the 181xx range — it belongs entirely to Allentown.

Every Pennsylvania 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 Allentown occupies.

• 484 Area code 484
• 610 Area code 610
• 835 Area code 835

Allentown Pennsylvania area codes in full →

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