American 1 began as the Jackson Co-Op Federal Credit Union, a service provided to members of the Jackson Co-Op, and was founded in 1950. The Jackson Co-Op Credit Union was originally located at the local United Rubber Workers Hall 185 on a part-time basis, featuring 47 members, three full-time employees in its first year. Today, American 1 provides services to over 58,000 members. American 1 has more than 200 employees and serves Jackson, Calhoun, Washtenaw, Hillsdale, Lenawee, and Wayne Counties.