First Congregational Church is one of the 175 churches of the Connecticut Conference which is one of 39 regional conferences in the 1.5 million member United Church of Christ, a "united and uniting" Protestant denomination in the United States of America. Our membership descends from Congregational, Christian, Evangelical, and Reformed traditions, and dates its founding to June 25, 1957, the day the four denominations merged into one fellowship.

In our "ground-up" polity, the Conference is the regional representative for UCC churches, and Associations of those churches, in Connecticut. It provides pastoral support, placement, and other support services to the local churches, and acts as a liaison between the churches and the national denomination.

The Connecticut Conference is a direct descendant of the Congregational Christian Conference of Connecticut, which held its first Annual Meeting in 1867. The Conference includes two additional legal entities with a distinguished history of mission and ministry: the Missionary Society of Connecticut was founded in 1798 to bring the Christian gospel to the "heathen lands" of Vermont and Ohio . The Trustees of the Fund for Ministers oversee supplements to the retirement income of Connecticut's Clergy. Both organizations are governed by the Board of Directors elected by the Connecticut Conference.