All Bank Branches In Harwinton, Connecticut Leave a Comment / By admin / October 30, 2018 List of all bank branches in Harwinton, Connecticut: Thomaston Savings Bank Thomaston Savings Bank-Harwinton Branch Related posts: All Bank Branches in 06791 All Bank Branches In Thomaston, Connecticut Thomaston Savings Bank-Harwinton Branch All Bank Branches In Cos Cob, Connecticut