The Poway Stamp Club of San Diego County is a member and affiliate of the American Philatelic Society (APS).
The APS has members in more than 110 countries, it is the largest, non-profit organization for stamp collectors in the world. Founded in 1886, the APS serves collectors, educators, postal historians and the general public by providing a wide variety of programs and services.
The members of the Poway Stamp Club are proud supporters of the Guyana Philatelic Society and the Stamp Collectors of Guyana. The Poway Stamp Club helps support the Society and the newly opened Guyana Philatelic Library.