The archives collects material that documents the Congregational, Congregational Christian, Christian and United Church of Christ tradition throughout the world. There are approximately 900 separate archival and manuscript collections totaling 1200 linear feet.
Located in Ontario, the holdings in the archives include records for the Presbyterian Church in Canada; the Methodist Church (Canada); the Congregational Union of Canada; Local Union Churches; and the Evangelical United Brethren Church. There are also personal papers, biographical files and photographs.
The United Church of Canada Archives, Toronto, includes the General Council Archives and the Central Ontario Conferences Archives serving Bay of Quinte, Hamilton, London, Manitou, and Toronto Conferences.