United States ZIP Code 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 ZIP Code Data

42,605 zip code found

Postal Code	State	County	City	Records
82441	Wyoming	Big Horn	Shell	1
82442	Wyoming	Washakie	Ten Sleep	1
82443	Wyoming	Hot Springs	Thermopolis	1
82450	Wyoming	Park	Wapiti	1
82501	Wyoming	Fremont	Riverton	1
82510	Wyoming	Fremont	Arapahoe	1
82512	Wyoming	Fremont	Crowheart	1
82513	Wyoming	Fremont	Dubois	1
82514	Wyoming	Fremont	Fort Washakie	1
82515	Wyoming	Fremont	Hudson	1
82516	Wyoming	Fremont	Kinnear	1
82520	Wyoming	Fremont	Lander	1
82523	Wyoming	Fremont	Pavillion	1
82524	Wyoming	Fremont	Saint Stephens	1
82601	Wyoming	Natrona	Casper	1
82602	Wyoming	Natrona	Casper	1
82604	Wyoming	Natrona	Casper	1
82605	Wyoming	Natrona	Casper	1
82609	Wyoming	Natrona	Casper	1
82615	Wyoming	Carbon	Shirley Basin	1
82620	Wyoming	Natrona	Alcova	1
82630	Wyoming	Natrona	Arminto	1
82633	Wyoming	Converse	Douglas	1
82635	Wyoming	Natrona	Edgerton	1
82636	Wyoming	Natrona	Evansville	1
82637	Wyoming	Converse	Glenrock	1
82638	Wyoming	Natrona	Hiland	1
82639	Wyoming	Johnson	Kaycee	1
82640	Wyoming	Johnson	Linch	1
82642	Wyoming	Fremont	Lysite	1
82643	Wyoming	Natrona	Midwest	1
82644	Wyoming	Natrona	Mills	1
82646	Wyoming	Natrona	Natrona	1
82648	Wyoming	Natrona	Powder River	1
82649	Wyoming	Fremont	Shoshoni	1
82701	Wyoming	Weston	Newcastle	1
82710	Wyoming	Crook	Aladdin	1
82711	Wyoming	Crook	Alva	1
82712	Wyoming	Crook	Beulah	1
82713	Wyoming	Crook	Carlile	1
82714	Wyoming	Crook	Devils Tower	1
82715	Wyoming	Weston	Four Corners	1
82716	Wyoming	Campbell	Gillette	1
82717	Wyoming	Campbell	Gillette	1
82718	Wyoming	Campbell	Gillette	1
82720	Wyoming	Crook	Hulett	1
82721	Wyoming	Crook	Moorcroft	1
82723	Wyoming	Weston	Osage	1
82725	Wyoming	Campbell	Recluse	1
82727	Wyoming	Campbell	Rozet	1

Page 722 of 853 · 42,605 zip code

ZIP Codes by Region

ZIP Codes 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.