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
54112 Wisconsin Marinette Coleman 1
54113 Wisconsin Outagamie Combined Locks 1
54114 Wisconsin Marinette Crivitz 1
54115 Wisconsin Brown De Pere 1
54119 Wisconsin Marinette Dunbar 1
54120 Wisconsin Florence Fence 1
54121 Wisconsin Florence Florence 1
54123 Wisconsin Calumet Forest Junction 1
54124 Wisconsin Oconto Gillett 1
54125 Wisconsin Marinette Goodman 1
54126 Wisconsin Brown Greenleaf 1
54127 Wisconsin Shawano Green Valley 1
54128 Wisconsin Shawano Gresham 1
54129 Wisconsin Calumet Hilbert 1
54130 Wisconsin Outagamie Kaukauna 1
54131 Wisconsin Outagamie Freedom 1
54135 Wisconsin Menominee Keshena 1
54136 Wisconsin Outagamie Kimberly 1
54137 Wisconsin Shawano Krakow 1
54138 Wisconsin Oconto Lakewood 1
54139 Wisconsin Oconto Lena 1
54140 Wisconsin Outagamie Little Chute 1
54141 Wisconsin Oconto Little Suamico 1
54143 Wisconsin Marinette Marinette 1
54149 Wisconsin Oconto Mountain 1
54150 Wisconsin Menominee Neopit 1
54151 Wisconsin Marinette Niagara 1
54152 Wisconsin Outagamie Nichols 1
54153 Wisconsin Oconto Oconto 1
54154 Wisconsin Oconto Oconto Falls 1
54155 Wisconsin Brown Oneida 1
54156 Wisconsin Marinette Pembine 1
54157 Wisconsin Marinette Peshtigo 1
54159 Wisconsin Marinette Porterfield 1
54160 Wisconsin Calumet Potter 1
54161 Wisconsin Marinette Pound 1
54162 Wisconsin Brown Pulaski 1
54165 Wisconsin Outagamie Seymour 1
54166 Wisconsin Shawano Shawano 1
54169 Wisconsin Calumet Sherwood 1
54170 Wisconsin Outagamie Shiocton 1
54171 Wisconsin Oconto Sobieski 1
54173 Wisconsin Brown Suamico 1
54174 Wisconsin Oconto Suring 1
54175 Wisconsin Oconto Townsend 1
54177 Wisconsin Marinette Wausaukee 1
54180 Wisconsin Brown Wrightstown 1
54182 Wisconsin Shawano Zachow 1
54201 Wisconsin Kewaunee Algoma 1
54202 Wisconsin Door Baileys Harbor 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.