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Washington Master Addressing Services (WAMAS)

Locating people and places in Washington


Available to local government agencies, the WAMAS API toolbox serves to

  • Correct an address to USPS standard format
  • Add coordinates to an address so it can be displayed and viewed on a map
  • Locate an address in a precise boundary area, such as voting or taxing districts

First-time access - In order to access the WAMAS application programming interface, first-time users must complete three access request forms

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