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
98937 Washington Yakima Naches 1
98938 Washington Yakima Outlook 1
98939 Washington Yakima Parker 1
98940 Washington Kittitas Ronald 1
98941 Washington Kittitas Roslyn 1
98942 Washington Yakima Selah 1
98943 Washington Kittitas South Cle Elum 1
98944 Washington Yakima Sunnyside 1
98946 Washington Kittitas Thorp 1
98947 Washington Yakima Tieton 1
98948 Washington Yakima Toppenish 1
98950 Washington Kittitas Vantage 1
98951 Washington Yakima Wapato 1
98952 Washington Yakima White Swan 1
98953 Washington Yakima Zillah 1
99001 Washington Spokane Airway Heights 1
99003 Washington Spokane Chattaroy 1
99004 Washington Spokane Cheney 1
99005 Washington Spokane Colbert 1
99006 Washington Spokane Deer Park 1
99008 Washington Lincoln Edwall 1
99009 Washington Spokane Elk 1
99011 Washington Spokane Fairchild Air Force Base 1
99012 Washington Spokane Fairfield 1
99013 Washington Stevens Ford 1
99014 Washington Spokane Four Lakes 1
99015 Washington Spokane Freeman 1
99016 Washington Spokane Greenacres 1
99017 Washington Whitman Lamont 1
99018 Washington Spokane Latah 1
99019 Washington Spokane Liberty Lake 1
99020 Washington Spokane Marshall 1
99021 Washington Spokane Mead 1
99022 Washington Spokane Medical Lake 1
99023 Washington Spokane Mica 1
99025 Washington Spokane Newman Lake 1
99026 Washington Spokane Nine Mile Falls 1
99027 Washington Spokane Otis Orchards 1
99029 Washington Lincoln Reardan 1
99030 Washington Spokane Rockford 1
99031 Washington Spokane Spangle 1
99032 Washington Lincoln Sprague 1
99033 Washington Whitman Tekoa 1
99034 Washington Stevens Tumtum 1
99036 Washington Spokane Valleyford 1
99037 Washington Spokane Veradale 1
99039 Washington Spokane Waverly 1
99040 Washington Stevens Wellpinit 1
99101 Washington Stevens Addy 1
99102 Washington Whitman Albion 1

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.
Information provided on CodeReff is for reference purposes only. Always verify financial and banking details with the relevant institution before use.