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
54736 Wisconsin Pepin Durand 1
54737 Wisconsin Dunn Eau Galle 1
54738 Wisconsin Trempealeau Eleva 1
54739 Wisconsin Dunn Elk Mound 1
54740 Wisconsin Pierce Elmwood 1
54741 Wisconsin Eau Claire Fairchild 1
54742 Wisconsin Eau Claire Fall Creek 1
54743 Wisconsin Buffalo Gilmanton 1
54745 Wisconsin Chippewa Holcombe 1
54746 Wisconsin Clark Humbird 1
54747 Wisconsin Trempealeau Independence 1
54748 Wisconsin Chippewa Jim Falls 1
54749 Wisconsin Dunn Knapp 1
54750 Wisconsin Pierce Maiden Rock 1
54751 Wisconsin Dunn Menomonie 1
54754 Wisconsin Jackson Merrillan 1
54755 Wisconsin Buffalo Mondovi 1
54756 Wisconsin Buffalo Nelson 1
54757 Wisconsin Chippewa New Auburn 1
54758 Wisconsin Trempealeau Osseo 1
54759 Wisconsin Pepin Pepin 1
54760 Wisconsin Trempealeau Pigeon Falls 1
54761 Wisconsin Pierce Plum City 1
54762 Wisconsin Barron Prairie Farm 1
54763 Wisconsin Dunn Ridgeland 1
54764 Wisconsin Dunn Rock Falls 1
54765 Wisconsin Dunn Sand Creek 1
54766 Wisconsin Rusk Sheldon 1
54767 Wisconsin Pierce Spring Valley 1
54768 Wisconsin Chippewa Stanley 1
54769 Wisconsin Pepin Stockholm 1
54770 Wisconsin Trempealeau Strum 1
54771 Wisconsin Clark Thorp 1
54772 Wisconsin Dunn Wheeler 1
54773 Wisconsin Trempealeau Whitehall 1
54774 Wisconsin Chippewa Chippewa Falls 1
54801 Wisconsin Washburn Spooner 1
54805 Wisconsin Barron Almena 1
54806 Wisconsin Ashland Ashland 1
54810 Wisconsin Polk Balsam Lake 1
54812 Wisconsin Barron Barron 1
54813 Wisconsin Barron Barronett 1
54814 Wisconsin Bayfield Bayfield 1
54816 Wisconsin Bayfield Benoit 1
54817 Wisconsin Washburn Birchwood 1
54818 Wisconsin Barron Brill 1
54819 Wisconsin Rusk Bruce 1
54820 Wisconsin Douglas Brule 1
54821 Wisconsin Bayfield Cable 1
54822 Wisconsin Barron Cameron 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.