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
09813 Armed Forces - Europe none APO 1
09814 Armed Forces - Europe none APO 1
09815 Armed Forces - Europe none APO 1
09816 Armed Forces - Europe none APO 1
09819 Armed Forces - Europe none APO 1
09821 Armed Forces - Europe none APO 1
09822 Armed Forces - Europe none APO 1
09823 Armed Forces - Europe none APO 1
09824 Armed Forces - Europe none APO 1
09825 Armed Forces - Europe none APO 1
09827 Armed Forces - Europe none APO 1
09828 Armed Forces - Europe none APO 1
09829 Armed Forces - Europe none APO 1
09830 Armed Forces - Europe none APO 1
09831 Armed Forces - Europe none APO 1
09832 Armed Forces - Europe none APO 1
09833 Armed Forces - Europe none APO 1
09834 Armed Forces - Europe none FPO 1
09835 Armed Forces - Europe none FPO 1
09836 Armed Forces - Europe none FPO 1
09837 Armed Forces - Europe none FPO 1
09838 Armed Forces - Europe none FPO 1
09839 Armed Forces - Europe none APO 1
09841 Armed Forces - Europe none APO 1
09842 Armed Forces - Europe none APO 1
09843 Armed Forces - Europe none APO 1
09844 Armed Forces - Europe none APO 1
09852 Armed Forces - Europe none APO 1
09853 Armed Forces - Europe none APO 1
09854 Armed Forces - Europe none APO 1
09855 Armed Forces - Europe none APO 1
09858 Armed Forces - Europe none APO 1
09865 Armed Forces - Europe none FPO 1
09866 Armed Forces - Europe none APO 1
09868 Armed Forces - Europe none APO 1
09871 Armed Forces - Europe none APO 1
09880 Armed Forces - Europe none APO 1
09882 Armed Forces - Europe none APO 1
09888 Armed Forces - Europe none APO 1
09889 Armed Forces - Europe none APO 1
09890 Armed Forces - Europe none APO 1
09892 Armed Forces - Europe none APO 1
09894 Armed Forces - Europe none APO 1
09898 Armed Forces - Europe none APO 1
10001 New York New York New York 1
10002 New York New York New York 1
10003 New York New York New York 1
10004 New York New York New York 1
10005 New York New York New York 1
10006 New York New York New York 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.