The Post Mark Collectors Club is a non-profit philatelic organization based in the United States, with members worldwide. The group maintains the most thorough post office listings in the country—our celebrated Directory; a Museum featuring two million philatelic and postal history items; our award-winning publication, the Bulletin; and an annual full-out four-day philatelic Convention. We hope you'll join us!

All of our work is done by enthusiastic volunteer members. The club is a non-profit affiliate of the American Philatelic Society.

New: A Glossary of Postal Unit Terminology Yes, there is a difference between CPU and CPO! You can discover the difference between a station and a branch with this photo glossary, as well.

→ The PMCC is on Facebook! Follow us by 'liking' the page at the link above.

PMCC on the BBC Member Evan Kalish explains the joy of postmarks The BBC broadcast a segment with Evan Kalish about visiting post offices and collecting postmarks ... worldwide! (Australian Broadcasting aired a story, too!)

New: Directory Updates! South Carolina P.O. Listings Fully Up-To-Date Our unabridged Directory listings make the ultimate postal reference: information regarding all active Post Offices, stations, branches, CPUs, and more. Available for all 50 states. Learn more and order here.

The 2012 PMCC Convention: Show Me the Postmarks! Missouri Loves Company. The first of the official information for the 2012 PMCC Convention, has been released. Visit our Convention page for more details!