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 San Diego County Philatelic Library is a not-for-profit organization in San Diego County, California. The Library hosts approximately 16,000 volumes of books, monographs, catalogs and periodicals. The Library and its facilities are meeting place for the Poway Stamp Club and is operated by friendly volunteers.