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
82729 Wyoming Crook Sundance 1
82730 Wyoming Weston Upton 1
82731 Wyoming Campbell Weston 1
82732 Wyoming Campbell Wright 1
82801 Wyoming Sheridan Sheridan 1
82831 Wyoming Sheridan Arvada 1
82832 Wyoming Sheridan Banner 1
82833 Wyoming Sheridan Big Horn 1
82834 Wyoming Johnson Buffalo 1
82835 Wyoming Sheridan Clearmont 1
82836 Wyoming Sheridan Dayton 1
82837 Wyoming Sheridan Leiter 1
82838 Wyoming Sheridan Parkman 1
82839 Wyoming Sheridan Ranchester 1
82840 Wyoming Johnson Saddlestring 1
82842 Wyoming Sheridan Story 1
82844 Wyoming Sheridan Wolf 1
82845 Wyoming Sheridan Wyarno 1
82901 Wyoming Sweetwater Rock Springs 1
82902 Wyoming Sweetwater Rock Springs 1
82922 Wyoming Sublette Bondurant 1
82923 Wyoming Sublette Boulder 1
82925 Wyoming Sublette Cora 1
82929 Wyoming Sweetwater Little America 1
82930 Wyoming Uinta Evanston 1
82931 Wyoming Uinta Evanston 1
82932 Wyoming Sweetwater Farson 1
82933 Wyoming Uinta Fort Bridger 1
82934 Wyoming Sweetwater Granger 1
82935 Wyoming Sweetwater Green River 1
82936 Wyoming Uinta Lonetree 1
82937 Wyoming Uinta Lyman 1
82938 Wyoming Sweetwater McKinnon 1
82939 Wyoming Uinta Mountain View 1
82941 Wyoming Sublette Pinedale 1
82942 Wyoming Sweetwater Point of Rocks 1
82943 Wyoming Sweetwater Reliance 1
82944 Wyoming Uinta Robertson 1
82945 Wyoming Sweetwater Superior 1
83001 Wyoming Teton Jackson 1
83002 Wyoming Teton Jackson 1
83011 Wyoming Teton Kelly 1
83012 Wyoming Teton Moose 1
83013 Wyoming Teton Moran 1
83014 Wyoming Teton Wilson 1
83025 Wyoming Teton Teton Village 1
83101 Wyoming Lincoln Kemmerer 1
83110 Wyoming Lincoln Afton 1
83111 Wyoming Lincoln Auburn 1
83112 Wyoming Lincoln Bedford 1

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