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
57218 South Dakota Deuel Brandt 1
57219 South Dakota Day Bristol 1
57220 South Dakota Brookings Bruce 1
57221 South Dakota Hamlin Bryant 1
57223 South Dakota Hamlin Castlewood 1
57224 South Dakota Roberts Claire City 1
57225 South Dakota Clark Clark 1
57226 South Dakota Deuel Clear Lake 1
57227 South Dakota Roberts Corona 1
57231 South Dakota Kingsbury De Smet 1
57232 South Dakota Marshall Eden 1
57233 South Dakota Kingsbury Erwin 1
57234 South Dakota Hamlin Estelline 1
57235 South Dakota Codington Florence 1
57236 South Dakota Clark Garden City 1
57237 South Dakota Deuel Gary 1
57238 South Dakota Deuel Goodwin 1
57239 South Dakota Day Grenville 1
57241 South Dakota Hamlin Hayti 1
57242 South Dakota Hamlin Hazel 1
57243 South Dakota Codington Henry 1
57245 South Dakota Codington Kranzburg 1
57246 South Dakota Grant Labolt 1
57247 South Dakota Marshall Lake City 1
57248 South Dakota Hamlin Lake Norden 1
57249 South Dakota Kingsbury Lake Preston 1
57251 South Dakota Grant Marvin 1
57252 South Dakota Grant Milbank 1
57253 South Dakota Grant Milbank 1
57255 South Dakota Roberts New Effington 1
57256 South Dakota Roberts Ortley 1
57257 South Dakota Roberts Peever 1
57258 South Dakota Clark Raymond 1
57259 South Dakota Grant Revillo 1
57260 South Dakota Roberts Rosholt 1
57261 South Dakota Day Roslyn 1
57262 South Dakota Roberts Sisseton 1
57263 South Dakota Codington South Shore 1
57264 South Dakota Grant Stockholm 1
57265 South Dakota Grant Strandburg 1
57266 South Dakota Roberts Summit 1
57268 South Dakota Deuel Toronto 1
57269 South Dakota Grant Twin Brooks 1
57270 South Dakota Marshall Veblen 1
57271 South Dakota Clark Vienna 1
57272 South Dakota Codington Wallace 1
57273 South Dakota Day Waubay 1
57274 South Dakota Day Webster 1
57276 South Dakota Brookings White 1
57278 South Dakota Clark Willow Lake 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.