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
05447 Vermont Franklin East Berkshire 1
05448 Vermont Franklin East Fairfield 1
05449 Vermont Chittenden Colchester 1
05450 Vermont Franklin Enosburg Falls 1
05451 Vermont Chittenden Essex 1
05452 Vermont Chittenden Essex Junction 1
05453 Vermont Chittenden Essex Junction 1
05454 Vermont Chittenden Fairfax 1
05455 Vermont Franklin Fairfield 1
05456 Vermont Addison Ferrisburg 1
05457 Vermont Franklin Franklin 1
05458 Vermont Grand Isle Grand Isle 1
05459 Vermont Franklin Highgate Center 1
05460 Vermont Franklin Highgate Springs 1
05461 Vermont Chittenden Hinesburg 1
05462 Vermont Chittenden Huntington 1
05463 Vermont Grand Isle Isle La Motte 1
05464 Vermont Lamoille Jeffersonville 1
05465 Vermont Chittenden Jericho 1
05466 Vermont Chittenden Jonesville 1
05468 Vermont Chittenden Milton 1
05469 Vermont Addison Monkton 1
05470 Vermont Franklin Montgomery 1
05471 Vermont Franklin Montgomery Center 1
05472 Vermont Addison New Haven 1
05473 Vermont Addison North Ferrisburg 1
05474 Vermont Grand Isle North Hero 1
05476 Vermont Franklin Richford 1
05477 Vermont Chittenden Richmond 1
05478 Vermont Franklin Saint Albans 1
05479 Vermont Franklin Saint Albans 1
05481 Vermont Franklin Saint Albans Bay 1
05482 Vermont Chittenden Shelburne 1
05483 Vermont Franklin Sheldon 1
05485 Vermont Franklin Sheldon Springs 1
05486 Vermont Grand Isle South Hero 1
05487 Vermont Addison Starksboro 1
05488 Vermont Franklin Swanton 1
05489 Vermont Chittenden Underhill 1
05490 Vermont Chittenden Underhill Center 1
05491 Vermont Addison Vergennes 1
05492 Vermont Lamoille Waterville 1
05494 Vermont Chittenden Westford 1
05495 Vermont Chittenden Williston 1
05501 Massachusetts Essex Andover 1
05544 Massachusetts Essex Andover 1
05601 Vermont Washington Montpelier 1
05602 Vermont Washington Montpelier 1
05603 Vermont Washington Montpelier 1
05604 Vermont Washington Montpelier 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.