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
45041 Ohio Hamilton Miamitown 1
45042 Ohio Butler Middletown 1
45043 Ohio Butler Middletown 1
45044 Ohio Butler Middletown 1
45050 Ohio Butler Monroe 1
45051 Ohio Hamilton Mount Saint Joseph 1
45052 Ohio Hamilton North Bend 1
45053 Ohio Butler Okeana 1
45054 Ohio Warren Oregonia 1
45055 Ohio Butler Overpeck 1
45056 Ohio Butler Oxford 1
45061 Ohio Butler Ross 1
45062 Ohio Butler Seven Mile 1
45063 Ohio Butler Shandon 1
45064 Ohio Butler Somerville 1
45065 Ohio Warren South Lebanon 1
45066 Ohio Warren Springboro 1
45067 Ohio Butler Trenton 1
45068 Ohio Warren Waynesville 1
45069 Ohio Butler West Chester 1
45070 Ohio Preble West Elkton 1
45071 Ohio Butler West Chester 1
45073 Ohio Butler Monroe 1
45099 Ohio Butler Monroe 1
45101 Ohio Brown Aberdeen 1
45102 Ohio Clermont Amelia 1
45103 Ohio Clermont Batavia 1
45105 Ohio Adams Bentonville 1
45106 Ohio Clermont Bethel 1
45107 Ohio Clinton Blanchester 1
45110 Ohio Highland Buford 1
45111 Ohio Hamilton Camp Dennison 1
45112 Ohio Clermont Chilo 1
45113 Ohio Clinton Clarksville 1
45114 Ohio Clinton Cuba 1
45115 Ohio Brown Decatur 1
45118 Ohio Brown Fayetteville 1
45119 Ohio Brown Feesburg 1
45120 Ohio Clermont Felicity 1
45121 Ohio Brown Georgetown 1
45122 Ohio Clermont Goshen 1
45123 Ohio Highland Greenfield 1
45130 Ohio Brown Hamersville 1
45131 Ohio Brown Higginsport 1
45132 Ohio Highland Highland 1
45133 Ohio Highland Hillsboro 1
45135 Ohio Highland Leesburg 1
45138 Ohio Clinton Lees Creek 1
45140 Ohio Clermont Loveland 1
45142 Ohio Highland Lynchburg 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.