The Episcopal Diocese of Michigan is the Episcopal diocese comprising more than 70 congregations in the southeast part of Michigan. The diocese traces its roots to the founding of St. Paul's, Detroit in 1824. It became a diocese of the Episcopal Church in 1836, one year before the State of Michigan entered the Union. Initially encompassing the entire Territory of Michigan, it split several times to reflect a growing population, and now includes only the densely populated southeastern portion of the state. St. Paul's, Detroit was formally designated the cathedral of the diocese in 1912.