No, blatant snobbery is not very Christian. There are some folks I don't like in my church and I'd rather not speak to, but I am still cordial and respectful to them without being fake. I say hello at least, give a nod, wave or something. You can't expect to get along with everyone, but if they're all acting like that, I would find another church.

OP: I'm sorry to hear people in your church are acting like that. Don't give up on it. There is a good church for you out there.