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
14830	New York	Steuben	Corning	1
14831	New York	Steuben	Corning	1
14836	New York	Livingston	Dalton	1
14837	New York	Yates	Dundee	1
14838	New York	Chemung	Erin	1
14839	New York	Steuben	Greenwood	1
14840	New York	Steuben	Hammondsport	1
14841	New York	Schuyler	Hector	1
14842	New York	Yates	Himrod	1
14843	New York	Steuben	Hornell	1
14844	New York	Chemung	Horseheads	1
14845	New York	Chemung	Horseheads	1
14846	New York	Livingston	Hunt	1
14847	New York	Seneca	Interlaken	1
14850	New York	Tompkins	Ithaca	1
14851	New York	Tompkins	Ithaca	1
14852	New York	Tompkins	Ithaca	1
14853	New York	Tompkins	Ithaca	1
14854	New York	Tompkins	Jacksonville	1
14855	New York	Steuben	Jasper	1
14856	New York	Steuben	Kanona	1
14857	New York	Yates	Lakemont	1
14858	New York	Steuben	Lindley	1
14859	New York	Tioga	Lockwood	1
14860	New York	Seneca	Lodi	1
14861	New York	Chemung	Lowman	1
14863	New York	Schuyler	Mecklenburg	1
14864	New York	Chemung	Millport	1
14865	New York	Schuyler	Montour Falls	1
14867	New York	Tompkins	Newfield	1
14869	New York	Schuyler	Odessa	1
14870	New York	Steuben	Painted Post	1
14871	New York	Chemung	Pine City	1
14872	New York	Chemung	Pine Valley	1
14873	New York	Steuben	Prattsburgh	1
14874	New York	Steuben	Pulteney	1
14876	New York	Schuyler	Reading Center	1
14877	New York	Steuben	Rexville	1
14878	New York	Schuyler	Rock Stream	1
14879	New York	Steuben	Savona	1
14880	New York	Allegany	Scio	1
14881	New York	Tompkins	Slaterville Springs	1
14882	New York	Tompkins	Lansing	1
14883	New York	Tioga	Spencer	1
14884	New York	Allegany	Swain	1
14885	New York	Steuben	Troupsburg	1
14886	New York	Tompkins	Trumansburg	1
14887	New York	Schuyler	Tyrone	1
14889	New York	Chemung	Van Etten	1
14891	New York	Schuyler	Watkins Glen	1

Page 117 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.