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
06879 Connecticut Fairfield Ridgefield 1
06880 Connecticut Fairfield Westport 1
06881 Connecticut Fairfield Westport 1
06883 Connecticut Fairfield Weston 1
06888 Connecticut Fairfield Westport 1
06889 Connecticut Fairfield Westport 1
06890 Connecticut Fairfield Southport 1
06896 Connecticut Fairfield Redding 1
06897 Connecticut Fairfield Wilton 1
06901 Connecticut Fairfield Stamford 1
06902 Connecticut Fairfield Stamford 1
06903 Connecticut Fairfield Stamford 1
06904 Connecticut Fairfield Stamford 1
06905 Connecticut Fairfield Stamford 1
06906 Connecticut Fairfield Stamford 1
06907 Connecticut Fairfield Stamford 1
06910 Connecticut Fairfield Stamford 1
06911 Connecticut Fairfield Stamford 1
06912 Connecticut Fairfield Stamford 1
06913 Connecticut Fairfield Stamford 1
06914 Connecticut Fairfield Stamford 1
06920 Connecticut Fairfield Stamford 1
06921 Connecticut Fairfield Stamford 1
06922 Connecticut Fairfield Stamford 1
06925 Connecticut Fairfield Stamford 1
06926 Connecticut Fairfield Stamford 1
06927 Connecticut Fairfield Stamford 1
06928 Connecticut Fairfield Stamford 1
07001 New Jersey Middlesex Avenel 1
07002 New Jersey Hudson Bayonne 1
07003 New Jersey Essex Bloomfield 1
07004 New Jersey Essex Fairfield 1
07005 New Jersey Morris Boonton 1
07006 New Jersey Essex Caldwell 1
07007 New Jersey Essex Caldwell 1
07008 New Jersey Middlesex Carteret 1
07009 New Jersey Essex Cedar Grove 1
07010 New Jersey Bergen Cliffside Park 1
07011 New Jersey Passaic Clifton 1
07012 New Jersey Passaic Clifton 1
07013 New Jersey Passaic Clifton 1
07014 New Jersey Passaic Clifton 1
07015 New Jersey Passaic Clifton 1
07016 New Jersey Union Cranford 1
07017 New Jersey Essex East Orange 1
07018 New Jersey Essex East Orange 1
07019 New Jersey Essex East Orange 1
07020 New Jersey Bergen Edgewater 1
07021 New Jersey Essex Essex Fells 1
07022 New Jersey Bergen Fairview 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.