The people who have been there or have been active on the forums know what im talking about, but for those who dont all you need to know is here.http://www.dsmtuners.com/forums/mid-atlantic-region-dsm/275085-bel-air-weekly-meet-up-thread.html
TO answer your question there are on average about 50-60 dsmers in harford county alone that i know of. Alot of guys dont go out unless we all go do something, Although you will see a few strolling around bel air on a nice day. As far as balto/harf area there are a ton of dsmers, back in the day...