The Universalist Unitarian Association of Congregations is located at 24 Farnsworth Street, Boston MA 02210.

On the website, you'll read that each of the 1,041 congregations in the United States, Canada, and overseas are democratic in polity and operation; they govern themselves. They unite in the Association to provide services that individual congregations cannot provide for themselves. Each congregation is associated with one of the UUA’s 20 districts. 

Check out the website sections for Visitors, Members or Leaders.  You'll also find such information as News, Events, About Us, Congregations, Bookstore, Giving, Pressroom, Congregations.