Formed in 1638, Allin Congregational broke away from what is now the First Church of Dedham Unitarian and moved across High Street in 1818.
Allin Congregational holds service at 9:45 a.m. on Sundays, in a traditional-style sanctuary, with sermons given by Rev. Cheryl Kerr. While church members attend service, children in preschool through confirmation can attend Sunday School, and kids under the age of 4 can go to a nursery school until service is over.
The church also hosts an Al Anon meeting at 10 a.m. on Friday mornings.