National Change of Address (NCOALink) is a secure dataset of approximately 160 million permanent change-of-address (COA) records consisting of the names and addresses of individuals, families and businesses who have filed a change-of-address with the USPS.

  • Independent agency of the United States federal government responsible for providing postal service in the United States..
  • One of the few government agencies explicitly authorized by the United States Constitution.
  • Employs around 617,000 workers, making it the third-largest civilian employer in the United States.

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