The only kehillah I’m part of, to the best of my knowledge, is Kehillas _____ ______, my shul. I mean, my dad pays the dues, so I guess I’m in the kehillah.
I think you’re in the kehillah you identify with. Like if you’re in the KAJ yekke kehillah, or a Chassidish kehillah. My family, except for our shul membership, is pretty nondenominational. I think a lot of litvaks are (though we’re not litvaks), unless their yeshiva has a kehillah, lke Brisk.
But then again, I’m a snot-nosed kid, so don’t listen to me.
(I’m bitter. Someone just called me that.)