I think it depends a lot on the individual congregation. Our previous church was terrible socially: everyone stuck to their own in-groups (which often overlappe

I think it depends a lot on the individual congregation. Our previous church was terrible socially: everyone stuck to their own in-groups (which often overlapped with extended family), and there was little mingling outside of Sunday morning. Our current church, however, is incredibly vibrant: we've made many close friends there, and the church community goes out of its way for each other (such as doing extensive landscaping last week for two members fighting cancer). Both of these churches are effectively from the same denomination.