Yes, that's what it would be considered.
I have wondered whether int his context, church should be considered a social club or an interest group - I think interest group. I have met my closest new friends since grade school except for one (Sander, the college friend who has a possible Aspie brother) in church. However, I was the opposite of most, as most people go to church first,t hen try out our Adult Bible Fellowships, which you can think of as small groups of people who meet before church to learn. I, on the other hand, went to an ABF for 2.5 years after coming home from college before starting full time into the main church service. (Our church has 1500 members. Yeah, I know, huge, but I don't get that overwhelmed by crwods. Maybe b/c of my low visions & some hearing loss?)
I think a church would be a good place if you can get involved in a Bible study. The friends I met there are very friendly, and I found people I fit in with right away - who love to tell puns and crack jokes and just be really silly at times. My mom says she was worried about me in a new group of people the first time I went out to eat with them, till she came to pick me up from dinner & saw me happily laughing and joking with them like I fit right in, which I did.
It's encouraged me to get involved helping to teach, etc., too. And, it is a place where one goes to get fed apiritually, so I would say it is an interest group, and one that helped me a lot.
Thought I should add, it's not always easy to find the right church. Our pastor now and previous has always talked about the importance of being friendly, and loving others - the best thing to do might be to e-mail or call the church inq uestion and ask how the people are and whether you'd feel welcome. Explain the concerns you have about socializing, and that you need...well, whatever you need. For me, it was needing people to reach out to me and show themselves friendly, and these people did.