Khaire Aeolos,
I think the most important tool we have at our disposal in building a community for Hellenismos is - you guessed it - the Internet. Facebook, MeetUp, forums, etc! With todays networking tools, we can find like-minded individuals with whom to found a Hellenic community.
In North-America, Hellenic Reconstructionists don't seem to be very common, from my perspective. In Greece and Europe, it seems to be a little less uncommon, considering the size of some festivals organized by some Hellenic groups.
One thing I would definitely recommend is meeting fellow heathens. Regardless of their "denomination". Though I recognize that we may not be perfectly alike, I embrace most (if not all) pagans as brethren.
You mentionned you were a young adult, are you also in college? If you are, perhaps joining or creating a student society might be of interest in meeting like-minded individuals?
I might write more about this later.

Zeus watch over you.