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
29944 South Carolina Hampton Varnville 1
29945 South Carolina Hampton Yemassee 1
30002 Georgia Dekalb Avondale Estates 1
30003 Georgia Gwinnett Norcross 1
30004 Georgia Fulton Alpharetta 1
30005 Georgia Fulton Alpharetta 1
30006 Georgia Cobb Marietta 1
30007 Georgia Cobb Marietta 1
30008 Georgia Cobb Marietta 1
30009 Georgia Fulton Alpharetta 1
30010 Georgia Gwinnett Norcross 1
30011 Georgia Barrow Auburn 1
30012 Georgia Rockdale Conyers 1
30013 Georgia Rockdale Conyers 1
30014 Georgia Newton Covington 1
30015 Georgia Newton Covington 1
30016 Georgia Newton Covington 1
30017 Georgia Gwinnett Grayson 1
30018 Georgia Walton Jersey 1
30019 Georgia Gwinnett Dacula 1
30021 Georgia Dekalb Clarkston 1
30022 Georgia Fulton Alpharetta 1
30023 Georgia Fulton Alpharetta 1
30024 Georgia Gwinnett Suwanee 1
30025 Georgia Walton Social Circle 1
30026 Georgia Gwinnett North Metro 1
30028 Georgia Forsyth Cumming 1
30029 Georgia Gwinnett North Metro 1
30030 Georgia Dekalb Decatur 1
30031 Georgia Dekalb Decatur 1
30032 Georgia Dekalb Decatur 1
30033 Georgia Dekalb Decatur 1
30034 Georgia Dekalb Decatur 1
30035 Georgia Dekalb Decatur 1
30036 Georgia Dekalb Decatur 1
30037 Georgia Dekalb Decatur 1
30038 Georgia Dekalb Lithonia 1
30039 Georgia Gwinnett Snellville 1
30040 Georgia Forsyth Cumming 1
30041 Georgia Forsyth Cumming 1
30042 Georgia Gwinnett Lawrenceville 1
30043 Georgia Gwinnett Lawrenceville 1
30044 Georgia Gwinnett Lawrenceville 1
30045 Georgia Gwinnett Lawrenceville 1
30046 Georgia Gwinnett Lawrenceville 1
30047 Georgia Gwinnett Lilburn 1
30048 Georgia Gwinnett Lilburn 1
30049 Georgia Gwinnett Lawrenceville 1
30052 Georgia Walton Loganville 1
30054 Georgia Newton Oxford 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.