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
44301 Ohio Summit Akron 1
44302 Ohio Summit Akron 1
44303 Ohio Summit Akron 1
44304 Ohio Summit Akron 1
44305 Ohio Summit Akron 1
44306 Ohio Summit Akron 1
44307 Ohio Summit Akron 1
44308 Ohio Summit Akron 1
44309 Ohio Summit Akron 1
44310 Ohio Summit Akron 1
44311 Ohio Summit Akron 1
44312 Ohio Summit Akron 1
44313 Ohio Summit Akron 1
44314 Ohio Summit Akron 1
44315 Ohio Summit Akron 1
44316 Ohio Summit Akron 1
44317 Ohio Summit Akron 1
44319 Ohio Summit Akron 1
44320 Ohio Summit Akron 1
44321 Ohio Summit Akron 1
44322 Ohio Summit Akron 1
44325 Ohio Summit Akron 1
44326 Ohio Summit Akron 1
44328 Ohio Summit Akron 1
44333 Ohio Summit Akron 1
44334 Ohio Summit Fairlawn 1
44372 Ohio Summit Akron 1
44393 Ohio Summit Akron 1
44396 Ohio Summit Akron 1
44398 Ohio Summit Akron 1
44399 Ohio Summit Akron 1
44401 Ohio Mahoning Berlin Center 1
44402 Ohio Trumbull Bristolville 1
44403 Ohio Trumbull Brookfield 1
44404 Ohio Trumbull Burghill 1
44405 Ohio Mahoning Campbell 1
44406 Ohio Mahoning Canfield 1
44408 Ohio Columbiana Columbiana 1
44410 Ohio Trumbull Cortland 1
44411 Ohio Portage Deerfield 1
44412 Ohio Portage Diamond 1
44413 Ohio Columbiana East Palestine 1
44415 Ohio Columbiana Elkton 1
44416 Ohio Mahoning Ellsworth 1
44417 Ohio Trumbull Farmdale 1
44418 Ohio Trumbull Fowler 1
44420 Ohio Trumbull Girard 1
44422 Ohio Mahoning Greenford 1
44423 Ohio Columbiana Hanoverton 1
44424 Ohio Trumbull Hartford 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.