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
53951 Wisconsin Sauk North Freedom 1
53952 Wisconsin Marquette Oxford 1
53953 Wisconsin Marquette Packwaukee 1
53954 Wisconsin Columbia Pardeeville 1
53955 Wisconsin Columbia Poynette 1
53956 Wisconsin Dodge Randolph 1
53957 Wisconsin Columbia Randolph 1
53958 Wisconsin Sauk Reedsburg 1
53959 Wisconsin Sauk Reedsburg 1
53960 Wisconsin Columbia Rio 1
53961 Wisconsin Sauk Rock Springs 1
53962 Wisconsin Juneau Union Center 1
53963 Wisconsin Dodge Waupun 1
53964 Wisconsin Marquette Westfield 1
53965 Wisconsin Columbia Wisconsin Dells 1
53968 Wisconsin Juneau Wonewoc 1
53969 Wisconsin Columbia Wyocena 1
54001 Wisconsin Polk Amery 1
54002 Wisconsin Saint Croix Baldwin 1
54003 Wisconsin Pierce Beldenville 1
54004 Wisconsin Polk Clayton 1
54005 Wisconsin Polk Clear Lake 1
54006 Wisconsin Polk Cushing 1
54007 Wisconsin Saint Croix Deer Park 1
54009 Wisconsin Polk Dresser 1
54010 Wisconsin Pierce East Ellsworth 1
54011 Wisconsin Pierce Ellsworth 1
54013 Wisconsin Saint Croix Glenwood City 1
54014 Wisconsin Pierce Hager City 1
54015 Wisconsin Saint Croix Hammond 1
54016 Wisconsin Saint Croix Hudson 1
54017 Wisconsin Saint Croix New Richmond 1
54020 Wisconsin Polk Osceola 1
54021 Wisconsin Pierce Prescott 1
54022 Wisconsin Pierce River Falls 1
54023 Wisconsin Saint Croix Roberts 1
54024 Wisconsin Polk Saint Croix Falls 1
54025 Wisconsin Saint Croix Somerset 1
54026 Wisconsin Polk Star Prairie 1
54027 Wisconsin Saint Croix Wilson 1
54028 Wisconsin Saint Croix Woodville 1
54082 Wisconsin Saint Croix Houlton 1
54101 Wisconsin Oconto Abrams 1
54102 Wisconsin Marinette Amberg 1
54103 Wisconsin Forest Armstrong Creek 1
54104 Wisconsin Marinette Athelstane 1
54106 Wisconsin Outagamie Black Creek 1
54107 Wisconsin Shawano Bonduel 1
54110 Wisconsin Calumet Brillion 1
54111 Wisconsin Shawano Cecil 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.