They have Meetup groups for everything under the sun these days. I am not exactly a Meetup person, so I can’t comment on a Greek Meetup experience.

However, if you go here, you can enter your zip code on the far right and see whether there is a Greek Meetup group in your area. Last I checked they had them in Maryland, New York, and more—though in early 2013, I could not find one in Houston.

Sorry, Houston Greek-language learners!