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
54411 Wisconsin Marathon Athens 1
54412 Wisconsin Wood Auburndale 1
54413 Wisconsin Wood Babcock 1
54414 Wisconsin Shawano Birnamwood 1
54415 Wisconsin Wood Blenker 1
54416 Wisconsin Shawano Bowler 1
54417 Wisconsin Marathon Brokaw 1
54418 Wisconsin Langlade Bryant 1
54420 Wisconsin Clark Chili 1
54421 Wisconsin Clark Colby 1
54422 Wisconsin Clark Curtiss 1
54423 Wisconsin Portage Custer 1
54424 Wisconsin Langlade Deerbrook 1
54425 Wisconsin Clark Dorchester 1
54426 Wisconsin Marathon Edgar 1
54427 Wisconsin Marathon Eland 1
54428 Wisconsin Langlade Elcho 1
54429 Wisconsin Marathon Elderon 1
54430 Wisconsin Langlade Elton 1
54432 Wisconsin Marathon Galloway 1
54433 Wisconsin Taylor Gilman 1
54434 Wisconsin Taylor Jump River 1
54435 Wisconsin Lincoln Gleason 1
54436 Wisconsin Clark Granton 1
54437 Wisconsin Clark Greenwood 1
54439 Wisconsin Taylor Hannibal 1
54440 Wisconsin Marathon Hatley 1
54441 Wisconsin Wood Hewitt 1
54442 Wisconsin Lincoln Irma 1
54443 Wisconsin Portage Junction City 1
54446 Wisconsin Clark Loyal 1
54447 Wisconsin Taylor Lublin 1
54448 Wisconsin Marathon Marathon 1
54449 Wisconsin Wood Marshfield 1
54450 Wisconsin Shawano Mattoon 1
54451 Wisconsin Taylor Medford 1
54452 Wisconsin Lincoln Merrill 1
54454 Wisconsin Wood Milladore 1
54455 Wisconsin Marathon Mosinee 1
54456 Wisconsin Clark Neillsville 1
54457 Wisconsin Wood Nekoosa 1
54458 Wisconsin Portage Nelsonville 1
54459 Wisconsin Price Ogema 1
54460 Wisconsin Clark Owen 1
54462 Wisconsin Langlade Pearson 1
54463 Wisconsin Oneida Pelican Lake 1
54464 Wisconsin Langlade Phlox 1
54465 Wisconsin Langlade Pickerel 1
54466 Wisconsin Wood Pittsville 1
54467 Wisconsin Portage Plover 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.