The most obvious answer to this challenge is to use the USPS Address Verification web tool to clean up your mailing address list. Depending on how extensive your database is, there could be many incorrect addresses.Īddress verification is an essential step if you want mail to make it to the correct destination on the first try without losing packages or getting returned mail.

Individual ZIP+4 Codes may change up to once a month since plus 4s tie to how many employees a post office has, changing coverage areas, new construction, etc.Įstimates say that between 4.7% and 8.4% of the time customers fill out an online form or enter their information, they make a mistake.

The USPS makes 10-20 new ZIP Codes each year, and it takes up to 5 years for people to fully utilize new ZIP Codes.Even human error when typing in addresses creates problems.

ZIP Code changes, new construction, and annexation all play a role. Many factors stand in the way of knowing if addresses will work for your purposes. USPS Address Validation tells you that the US postal addresses to which you're sending are real and mailable. Pros of Using the USPS Postal Address Verification Tool.

Understanding the USPS Output, DPV, and LACS Link®.Video: How to Validate an Address with the USPS Address Lookup Tool.

How to find addresses online for free