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
83250 Idaho Bannock McCammon 1
83251 Idaho Custer Mackay 1
83252 Idaho Oneida Malad City 1
83253 Idaho Lemhi May 1
83254 Idaho Bear Lake Montpelier 1
83255 Idaho Butte Moore 1
83256 Idaho Bingham Moreland 1
83261 Idaho Bear Lake Paris 1
83262 Idaho Bingham Pingree 1
83263 Idaho Franklin Preston 1
83271 Idaho Power Rockland 1
83272 Idaho Bear Lake Saint Charles 1
83274 Idaho Bingham Shelley 1
83276 Idaho Caribou Soda Springs 1
83277 Idaho Bingham Springfield 1
83278 Idaho Custer Stanley 1
83281 Idaho Bannock Swanlake 1
83283 Idaho Franklin Thatcher 1
83285 Idaho Caribou Wayan 1
83286 Idaho Franklin Weston 1
83287 Idaho Bear Lake Fish Haven 1
83301 Idaho Twin Falls Twin Falls 1
83302 Idaho Twin Falls Rogerson 1
83303 Idaho Twin Falls Twin Falls 1
83311 Idaho Cassia Albion 1
83312 Idaho Cassia Almo 1
83313 Idaho Blaine Bellevue 1
83314 Idaho Gooding Bliss 1
83316 Idaho Twin Falls Buhl 1
83318 Idaho Cassia Burley 1
83320 Idaho Blaine Carey 1
83321 Idaho Twin Falls Castleford 1
83322 Idaho Camas Corral 1
83323 Idaho Cassia Declo 1
83324 Idaho Lincoln Dietrich 1
83325 Idaho Jerome Eden 1
83327 Idaho Camas Fairfield 1
83328 Idaho Twin Falls Filer 1
83330 Idaho Gooding Gooding 1
83332 Idaho Gooding Hagerman 1
83333 Idaho Blaine Hailey 1
83334 Idaho Twin Falls Hansen 1
83335 Idaho Jerome Hazelton 1
83336 Idaho Minidoka Heyburn 1
83337 Idaho Camas Hill City 1
83338 Idaho Jerome Jerome 1
83340 Idaho Blaine Ketchum 1
83341 Idaho Twin Falls Kimberly 1
83342 Idaho Cassia Malta 1
83343 Idaho Minidoka Minidoka 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.