Wherever you move, there will be groups of people doing their very best to make that place better. Head over to your new town hall and sign up for whatever community service activities strike your fancy. Your karma will thank you. A national group that concentrates on health and human services.
Places of worship are great places to meet nice people with all sorts of interests.
Furthermore, you can count on these places to host many activities and town happenings. Join a book club or writers' group Another great way to become part of a new crowd is to join some type of literary group. The conversation is already in place. Ask someone in a nearby college English department. Look in your town's alternative weekly.