Originally Posted by Seacoast:
I have a feeling their are more 3 railers out there that are not involved in magazines, forums and organizations.
You can be 100% certain of that!
To the best of my knowledge, there is no accurate count or estimate of the total number of O gauge participants. It would be great if we knew for sure or had even reasonably accurate estimates, but that is not likely to happen because it would be a very difficult and/or costly undertaking.
We do know with reasonable certainty that HO is still the leading scale (market share and total participation), followed by N scale, and then O scale/gauge, and that the gap between the first two and the latter is a fairly significant one. There are a number of perfectly reasonable reasons for this, and it's certainly nothing to be overly concerned about.