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
56763 Minnesota Roseau Warroad 1
57001 South Dakota Union Alcester 1
57002 South Dakota Brookings Aurora 1
57003 South Dakota Minnehaha Baltic 1
57004 South Dakota Union Beresford 1
57005 South Dakota Minnehaha Brandon 1
57006 South Dakota Brookings Brookings 1
57007 South Dakota Brookings Brookings 1
57010 South Dakota Clay Burbank 1
57012 South Dakota McCook Canistota 1
57013 South Dakota Lincoln Canton 1
57014 South Dakota Turner Centerville 1
57015 South Dakota Turner Chancellor 1
57016 South Dakota Lake Chester 1
57017 South Dakota Moody Colman 1
57018 South Dakota Minnehaha Colton 1
57020 South Dakota Minnehaha Crooks 1
57021 South Dakota Turner Davis 1
57022 South Dakota Minnehaha Dell Rapids 1
57024 South Dakota Moody Egan 1
57025 South Dakota Union Elk Point 1
57026 South Dakota Brookings Elkton 1
57027 South Dakota Lincoln Fairview 1
57028 South Dakota Moody Flandreau 1
57029 South Dakota Hutchinson Freeman 1
57030 South Dakota Minnehaha Garretson 1
57031 South Dakota Yankton Gayville 1
57032 South Dakota Lincoln Harrisburg 1
57033 South Dakota Minnehaha Hartford 1
57034 South Dakota Lincoln Hudson 1
57035 South Dakota Minnehaha Humboldt 1
57036 South Dakota Turner Hurley 1
57037 South Dakota Clay Irene 1
57038 South Dakota Union Jefferson 1
57039 South Dakota Lincoln Lennox 1
57040 South Dakota Yankton Lesterville 1
57041 South Dakota Minnehaha Lyons 1
57042 South Dakota Lake Madison 1
57043 South Dakota Turner Marion 1
57044 South Dakota Clay Meckling 1
57045 South Dakota Hutchinson Menno 1
57046 South Dakota Yankton Mission Hill 1
57047 South Dakota Turner Monroe 1
57048 South Dakota McCook Montrose 1
57049 South Dakota Union North Sioux City 1
57050 South Dakota Lake Nunda 1
57051 South Dakota Kingsbury Oldham 1
57052 South Dakota Hutchinson Olivet 1
57053 South Dakota Turner Parker 1
57054 South Dakota Lake Ramona 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.