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
99160 Washington Ferry Orient 1
99161 Washington Whitman Palouse 1
99163 Washington Whitman Pullman 1
99164 Washington Whitman Pullman 1
99165 Washington Whitman Pullman 1
99166 Washington Ferry Republic 1
99167 Washington Stevens Rice 1
99169 Washington Adams Ritzville 1
99170 Washington Whitman Rosalia 1
99171 Washington Whitman Saint John 1
99173 Washington Stevens Springdale 1
99174 Washington Whitman Steptoe 1
99176 Washington Whitman Thornton 1
99179 Washington Whitman Uniontown 1
99180 Washington Pend Oreille Usk 1
99181 Washington Stevens Valley 1
99185 Washington Lincoln Wilbur 1
99201 Washington Spokane Spokane 1
99202 Washington Spokane Spokane 1
99203 Washington Spokane Spokane 1
99204 Washington Spokane Spokane 1
99205 Washington Spokane Spokane 1
99206 Washington Spokane Spokane 1
99207 Washington Spokane Spokane 1
99208 Washington Spokane Spokane 1
99209 Washington Spokane Spokane 1
99210 Washington Spokane Spokane 1
99211 Washington Spokane Spokane 1
99212 Washington Spokane Spokane 1
99213 Washington Spokane Spokane 1
99214 Washington Spokane Spokane 1
99215 Washington Spokane Spokane 1
99216 Washington Spokane Spokane 1
99217 Washington Spokane Spokane 1
99218 Washington Spokane Spokane 1
99219 Washington Spokane Spokane 1
99220 Washington Spokane Spokane 1
99223 Washington Spokane Spokane 1
99224 Washington Spokane Spokane 1
99228 Washington Spokane Spokane 1
99251 Washington Spokane Spokane 1
99252 Washington Spokane Spokane 1
99256 Washington Spokane Spokane 1
99258 Washington Spokane Spokane 1
99260 Washington Spokane Spokane 1
99299 Washington Spokane Spokane 1
99301 Washington Franklin Pasco 1
99302 Washington Franklin Pasco 1
99320 Washington Benton Benton City 1
99321 Washington Grant Beverly 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.