Knowing the estimate of a quarter of a million stamp collectors in the United States, the question that arises is whether there are more or less serious collectors than in past eras. This is hard to tell for sure, but my own sense is that the the percentage of serious collectors is somewhat higher. The number of casual collectors is perhaps less. In the 1930-60 period, there was an enormous philatelic entry complex that encouraged kids to collect stamps. Captain Tim and Boys Life magazine had great market penetration to American boys, and there were millions of collections started. Most of these were of the most elementary kind, usually smaller packets poorly mounted into shabby albums. We see them all the time. The current generation doesn’t have this level of casual collector (no H.E. Harris and no school promotions), and so we bemoan the popularity of the hobby. But the inner core, people for who philately is part of their life, has remained a constant, maybe an even increasing number.
Whether this number has increased or decreased over the last twenty years is hard to say. Certainly the number of members of the American Philatelic Society and the number of subscribers to Linn’s has declined. But it is so easy to be a collector today without being a joiner or subscriber. If we look at market strength, it is hard to imagine that the internet auction sites of Delcampe, Ebay, and Bid Start could between them support twenty million listings at all times if there was only 250,000 serious collectors. One Ebay based company that I know amassed nearly 200,000 different buyers in a five year period. That would be 80% market penetration if there were only 250,000 serious collectors. As a totally unscientific statistical sample, I spent a month asking every customer of ours that I talked to if they bought from this Ebay company and less than 20% had heard of them. This produces a (totally unscientific) estimate of at least a million serious collectors in this country.
The real answer is, of course, that we don’t know how many serious collectors there are, even if we could all agree how to define seriousness. Most collector’s interest in the hobby, though it often lasts decades, ebbs and flows over time. It is fair to say, though, that the internet age has made it harder to judge just how many collectors exist and just how serious they are. Again, the market based estimate (about a million) is probably the best. Sellers soon disappear when they have no buyers. So tens of millions of monthly stamp offerings probably means our hobby is in pretty good shape.