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
58002 North Dakota Cass Absaraka 1
58004 North Dakota Cass Amenia 1
58005 North Dakota Cass Argusville 1
58006 North Dakota Cass Arthur 1
58007 North Dakota Cass Ayr 1
58008 North Dakota Richland Barney 1
58009 North Dakota Traill Blanchard 1
58011 North Dakota Cass Buffalo 1
58012 North Dakota Cass Casselton 1
58013 North Dakota Sargent Cayuga 1
58015 North Dakota Richland Christine 1
58016 North Dakota Traill Clifford 1
58017 North Dakota Sargent Cogswell 1
58018 North Dakota Richland Colfax 1
58021 North Dakota Cass Davenport 1
58027 North Dakota Ransom Enderlin 1
58029 North Dakota Cass Erie 1
58030 North Dakota Richland Fairmount 1
58031 North Dakota Barnes Fingal 1
58032 North Dakota Sargent Forman 1
58033 North Dakota Ransom Fort Ransom 1
58035 North Dakota Traill Galesburg 1
58036 North Dakota Cass Gardner 1
58038 North Dakota Cass Grandin 1
58040 North Dakota Sargent Gwinner 1
58041 North Dakota Richland Hankinson 1
58042 North Dakota Cass Harwood 1
58043 North Dakota Sargent Havana 1
58045 North Dakota Traill Hillsboro 1
58046 North Dakota Steele Hope 1
58047 North Dakota Cass Horace 1
58048 North Dakota Cass Hunter 1
58049 North Dakota Barnes Kathryn 1
58051 North Dakota Cass Kindred 1
58052 North Dakota Cass Leonard 1
58053 North Dakota Richland Lidgerwood 1
58054 North Dakota Ransom Lisbon 1
58056 North Dakota Steele Luverne 1
58057 North Dakota Richland McLeod 1
58058 North Dakota Richland Mantador 1
58059 North Dakota Cass Mapleton 1
58060 North Dakota Sargent Milnor 1
58061 North Dakota Richland Mooreton 1
58062 North Dakota Barnes Nome 1
58063 North Dakota Barnes Oriska 1
58064 North Dakota Cass Page 1
58065 North Dakota Barnes Pillsbury 1
58067 North Dakota Sargent Rutland 1
58068 North Dakota Ransom Sheldon 1
58069 North Dakota Sargent Stirum 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.