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
58237 North Dakota Walsh Grafton 1
58238 North Dakota Pembina Hamilton 1
58239 North Dakota Cavalier Hannah 1
58240 North Dakota Traill Hatton 1
58241 North Dakota Pembina Hensel 1
58243 North Dakota Walsh Hoople 1
58244 North Dakota Grand Forks Inkster 1
58249 North Dakota Cavalier Langdon 1
58250 North Dakota Walsh Lankin 1
58251 North Dakota Grand Forks Larimore 1
58254 North Dakota Nelson McVille 1
58255 North Dakota Cavalier Maida 1
58256 North Dakota Grand Forks Manvel 1
58257 North Dakota Traill Mayville 1
58258 North Dakota Grand Forks Mekinock 1
58259 North Dakota Nelson Michigan 1
58260 North Dakota Cavalier Milton 1
58261 North Dakota Walsh Minto 1
58262 North Dakota Pembina Mountain 1
58265 North Dakota Pembina Neche 1
58266 North Dakota Grand Forks Niagara 1
58267 North Dakota Grand Forks Northwood 1
58269 North Dakota Cavalier Osnabrock 1
58270 North Dakota Walsh Park River 1
58271 North Dakota Pembina Pembina 1
58272 North Dakota Nelson Petersburg 1
58273 North Dakota Walsh Pisek 1
58274 North Dakota Traill Portland 1
58275 North Dakota Grand Forks Reynolds 1
58276 North Dakota Pembina Saint Thomas 1
58277 North Dakota Steele Sharon 1
58278 North Dakota Grand Forks Thompson 1
58281 North Dakota Cavalier Wales 1
58282 North Dakota Pembina Walhalla 1
58301 North Dakota Ramsey Devils Lake 1
58310 North Dakota Rolette Agate 1
58311 North Dakota Cavalier Alsen 1
58313 North Dakota Pierce Balta 1
58316 North Dakota Rolette Belcourt 1
58317 North Dakota Towner Bisbee 1
58318 North Dakota Bottineau Bottineau 1
58319 North Dakota Wells Bremen 1
58321 North Dakota Ramsey Brocket 1
58323 North Dakota Cavalier Calvin 1
58324 North Dakota Towner Cando 1
58325 North Dakota Ramsey Churchs Ferry 1
58327 North Dakota Ramsey Crary 1
58329 North Dakota Rolette Dunseith 1
58330 North Dakota Ramsey Edmore 1
58331 North Dakota Towner Egeland 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.