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
39422 Mississippi Jasper Bay Springs 1
39423 Mississippi Perry Beaumont 1
39425 Mississippi Forrest Brooklyn 1
39426 Mississippi Pearl River Carriere 1
39427 Mississippi Jefferson Davis Carson 1
39428 Mississippi Covington Collins 1
39429 Mississippi Marion Columbia 1
39436 Mississippi Jones Eastabuchie 1
39437 Mississippi Jones Ellisville 1
39439 Mississippi Jasper Heidelberg 1
39440 Mississippi Jones Laurel 1
39441 Mississippi Jones Laurel 1
39442 Mississippi Jones Laurel 1
39443 Mississippi Jones Laurel 1
39451 Mississippi Greene Leakesville 1
39452 Mississippi George Lucedale 1
39455 Mississippi Lamar Lumberton 1
39456 Mississippi Greene Mc Lain 1
39457 Mississippi Pearl River Mc Neill 1
39459 Mississippi Jones Moselle 1
39460 Mississippi Jasper Moss 1
39461 Mississippi Greene Neely 1
39462 Mississippi Perry New Augusta 1
39463 Mississippi Pearl River Nicholson 1
39464 Mississippi Jones Ovett 1
39465 Mississippi Forrest Petal 1
39466 Mississippi Pearl River Picayune 1
39470 Mississippi Pearl River Poplarville 1
39474 Mississippi Jefferson Davis Prentiss 1
39475 Mississippi Lamar Purvis 1
39476 Mississippi Perry Richton 1
39477 Mississippi Jones Sandersville 1
39478 Mississippi Marion Sandy Hook 1
39479 Mississippi Covington Seminary 1
39480 Mississippi Jones Soso 1
39481 Mississippi Jasper Stringer 1
39482 Mississippi Lamar Sumrall 1
39483 Mississippi Marion Foxworth 1
39501 Mississippi Harrison Gulfport 1
39502 Mississippi Harrison Gulfport 1
39503 Mississippi Harrison Gulfport 1
39505 Mississippi Harrison Gulfport 1
39506 Mississippi Harrison Gulfport 1
39507 Mississippi Harrison Gulfport 1
39520 Mississippi Hancock Bay Saint Louis 1
39521 Mississippi Hancock Bay Saint Louis 1
39522 Mississippi Hancock Stennis Space Center 1
39525 Mississippi Hancock Diamondhead 1
39529 Mississippi Hancock Stennis Space Center 1
39530 Mississippi Harrison Biloxi 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.