ZIP Code™ by Address Enter a street address along with city and state OR enter a street address and ZIP Code ™.
ZIP plus 4 code lookup tools have to do more than full ZIP Code lookup. Before a user receives a ZIP+4 Code, the input address should undergo a standardization and validation process to confirm the address is deliverable.
Use the tool below to find the ZIP+4 for a single address and the calculator below to see how much your full list of addresses would cost.
Find ZIP+4 Codes for any USPS address. Lookup ZIP+4 Codes by single address, batch or API. Learn what they are and what they mean too. Use it free.
United States Zip Codes provides a free zip code map and list of zip codes by state. Find zip codes by address, zip codes by city, or zip codes by state.
A free address verification and Zip+4 lookup tool. Just enter your info to get a USPS standardized USPS ZIP+4 with county name, FIPs and more.
ZIP*USA compares U.S. address with a national address database from the USPS. If the address is verified, the program returns the correct ZIP+4, Carrier Route and Delivery Point codes, county name, time zone and area code.
Geocodio can return USPS ZIP+4 codes along with deliverability indicators for addresses and latitude/longitude coordinates, including PO Boxes. These indicators include whether the address is an exact match for a USPS-recognized address, carrier route IDs, ZIP+4, and more.
What is ZIP+4: It is a basic five-digit code with four digits added as an extra identifier. How to find your ZIP+4: Use Melissa's address check tool to verify an address and find your ZIP+4.
Remember, your ZIP code “with the extra 4 digits” is also better known as a ZIP+4 Code. Conclusion The USPS provides a free ZIP+4 code lookup tool on their website that can be used to find accurate and up-to-date ZIP+4 codes for specific addresses.
The ZIP+4 Code is a more detailed version of the regular ZIP Code system in the United States. Introduced by the USPS, it includes the basic five-digit ZIP Code followed by a hyphen and four additional digits. These extra digits identify a specific geographic segment, such as a city block, group of apartments, or individual high-volume receiver like a business or organization. By utilizing the ...
The Finder - Lookup By Zip Code
The United States Postal Service (USPS) uses ZIP+4 codes to assign five-digit ZIP codes. Each ZIP+4 code comprises a 9-digit code; the first 5 digits represent the standard ZIP code, and the last 4 digits identify a specific geographic location or group of addresses.
The ZIP+4 code system, also known as the “plus-four code,” extended or full zip code, adds four additional digits to the standard ZIP code. The purpose is to narrow down a location within a delivery zip code area, possibly to a specific building, floor, or apartment suite. This article explores ZIP+4 codes in the USA and similar “micro-postcodes” worldwide, including Ireland, the UK ...
The AccuGeocoder Module for AccuZIP6 adds precise latitude and longitude, along with Census Tract and Block Group information to each deliverable address in your database, and allows you to perform distance calculations based on a ZIP + 4®. Add Latitude/Longitude coordinates to your address lists at the ZIP + 4 level
Our Zip+4 Income Data product includes income statistics for all active U.S. Zip+4s. Built using 2025 United States Postal Service (USPS) address data and the most current (2023) Census income statistics, you’ll get a precise dataset that pinpoints income data down to the Zip+4 or even address level.
Address Lookup API / USPS ZIP+4 USPS ZIP+4 data for the USA The United States Postal Service maintains a database of US addresses with ZIP+4 codes which can be used for address lookup and validation.
ZIP+4 Codes help the USPS more effectively sort and distribute mail. ZIP+4 means faster deliveries, reduced misdeliveries and money saved.
