United States Postcode Database

Country Information

CountryUnited States

ISO CodeUS / USA

LanguageEnglish

Total Records42,605

United States uses a numeric code of 5 (or 5+4) digits (e.g. 10001). ZIP Code (5 digits) with optional ZIP+4 extension.

This database currently holds 42,605 ZIP Codes ranging from 00501 to 99929, linked to 0 building and address records. Because a single ZIP Code can cover more than one locality or delivery point, the lookup below groups addresses by code and lets you drill into the individual records.

Postal codes matter well beyond mail delivery. Couriers, e-commerce checkout forms and address autocomplete tools rely on the ZIP Code to route a parcel and to verify that the stated address matches the code. Addresses here are organised as State → County → City. The code itself is structured as ZIP Code → ZIP+4 → Delivery Point, which is postal geography and not the same as the administrative hierarchy. When you look up a code here, treat the associated name as a reference point rather than a full postal address — always confirm the street and house number with the sender or recipient before shipping.

Data source: a third-party open dataset. This is an imported reference dataset, not a live government feed; CodeReff does not independently verify each record, so codes may have changed since the snapshot was taken. Use the search box to look up a specific code, or browse the paginated table below.

United States Postcode Data

42,605 postcode found

Postal Code	State	County	City	Records
10505	New York	Westchester	Baldwin Place	1
10506	New York	Westchester	Bedford	1
10507	New York	Westchester	Bedford Hills	1
10509	New York	Putnam	Brewster	1
10510	New York	Westchester	Briarcliff Manor	1
10511	New York	Westchester	Buchanan	1
10512	New York	Putnam	Carmel	1
10514	New York	Westchester	Chappaqua	1
10516	New York	Putnam	Cold Spring	1
10517	New York	Westchester	Crompond	1
10518	New York	Westchester	Cross River	1
10519	New York	Westchester	Croton Falls	1
10520	New York	Westchester	Croton on Hudson	1
10521	New York	Westchester	Croton on Hudson	1
10522	New York	Westchester	Dobbs Ferry	1
10523	New York	Westchester	Elmsford	1
10524	New York	Putnam	Garrison	1
10526	New York	Westchester	Goldens Bridge	1
10527	New York	Westchester	Granite Springs	1
10528	New York	Westchester	Harrison	1
10530	New York	Westchester	Hartsdale	1
10532	New York	Westchester	Hawthorne	1
10533	New York	Westchester	Irvington	1
10535	New York	Westchester	Jefferson Valley	1
10536	New York	Westchester	Katonah	1
10537	New York	Putnam	Lake Peekskill	1
10538	New York	Westchester	Larchmont	1
10540	New York	Westchester	Lincolndale	1
10541	New York	Putnam	Mahopac	1
10542	New York	Putnam	Mahopac Falls	1
10543	New York	Westchester	Mamaroneck	1
10545	New York	Westchester	Maryknoll	1
10546	New York	Westchester	Millwood	1
10547	New York	Westchester	Mohegan Lake	1
10548	New York	Westchester	Montrose	1
10549	New York	Westchester	Mount Kisco	1
10550	New York	Westchester	Mount Vernon	1
10551	New York	Westchester	Mount Vernon	1
10552	New York	Westchester	Mount Vernon	1
10553	New York	Westchester	Mount Vernon	1
10557	New York	Westchester	Mount Vernon	1
10558	New York	Westchester	Mount Vernon	1
10560	New York	Westchester	North Salem	1
10562	New York	Westchester	Ossining	1
10566	New York	Westchester	Peekskill	1
10567	New York	Westchester	Cortlandt Manor	1
10570	New York	Westchester	Pleasantville	1
10571	New York	Westchester	Pleasantville	1
10572	New York	Westchester	Pleasantville	1
10573	New York	Westchester	Port Chester	1

Page 78 of 853 · 42,605 postcode

Postcodes by Region

Postcodes by City

Frequently Asked Questions

United States uses a numeric code of 5 (or 5+4) digits (e.g. 10001). ZIP Code (5 digits) with optional ZIP+4 extension.

Yes. United States postal codes are a plain numeric string, so a leading zero is part of the code itself. A code beginning with 0 must be written and stored with that zero — it is not the same as the same digits without it.

42,605 This database currently lists

The records are imported from a third-party open dataset, an open reference dataset. CodeReff does not independently verify each entry, so use the information as a reference rather than an official confirmation.

Enter a full or partial postal code, or a building or street name, in the search box above. You can also browse the paginated table and open any code to see its building and address records.