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NCOALink Processing

National Change of Address provides the opportunity for faster product/service processing through accurate mail delivery.


We're good:

  • No Setup Cost
  • Wholesale Rates
  • No Long-term Contracts
  • No Volume Requirements
  • Full NCOA-48 processing
  • Flexible Data Formatting
  • Low $45.00 minimum
  • Dedupe file upon request

The Best Data Privacy   

  • Zero 3rd party analytics
  • Zero social media tracking
  • Zero use of tracking cookies
  • No location-based tracking
  • No web beacons or clear gifs
  • No flash cookies or LSO's
  • No IP Address tracking
  • Other info providers track you
  • We don't track you at all



Over 44 million Americans change addresses annually


National Change of Address


NCOA Quick Guide

National Change of Address makes USPS change-of-address (COA) information available to mailers, service bureaus, list owners,and database administrators to help update addresses and reduce undeliverable mailpieces.


NCOA is a comprehensive program that aids mailers in identifying changes of address before mail enters the mailstream.

National Change of Address processing is provided by private sector companies in partnership with the Postal Service. Updated, computerized COA information is provided on a regularly scheduled basis by the USPS. NCOAsource improves mail deliverability by checking the last 4 years' for individual, family, and business moves and providing mailers with current, standardized 5-digit ZIP Codes, 4-digit add-on codes, and 3-digit delivery point coded addresses.


Steps that take place when your data is uploaded to NCOAsource.com:

  1. First, all input addresses undergo robust dual-engine USPS address standardization, including data hygiene and appending the ZIP+4 code
    • Note: You do not need to have Zip4 data in your input file; our processing adds that
  2. Once the addresses have been standardized and the ZIP+4 code applied, your input names & address are matched against the NCOA File, which contains approximately 160 million records and 48 months of permanent address changes.
    • Note: Address change information is derived from the PS Form 3575, Change-of-Address Order, filed by relocating postal customers
  3. If an exact match is made using the old address information along with the input name, then the NCOA licensee is permitted to provide the move information (new address) to the mailer

Questions & Answers:

  • How often is the NCOALink dataset updated?
    Answer: It's updated weekly by the USPS.
  • Does the National Change of Address data really go back 4 years?
    Answer: Yes. We provide the full 48-month (4 year) NCOA dataset.
  • Does your NCOA processing provide USPS address standardization too?
    Answer: Yes. In fact, that is our first step in our National Change of Address service.
  • I don't have Zip+4 data in my file...can you still update it?
    Answer: Yes. Zip+4 data in your input file is not required. We will append Zip+4 to your data and include it in your NCOA return file.
  • Does this NCOA processing include the CASS 3553 report? And the NCOA report?
    Answer: Yes. Both are included as an attachment in your Usage Report email.