The diocese comprises 32 parishes, 30 in South Carolina and 2 in Georgia, in the United States.

[2] The Diocese of the Southeast, previously the Missionary Jurisdiction of the South, origin goes back to 1865, on the aftermath of the Civil War, with the work of Peter Fayssoux Stevens, a former Confederate colonel, a member of the Protestant Episcopal Church.

In December 1874, in a convention held in Pinopolis, with members of four parishes, after the rejection of four black men from the ministry by the Protestant Episcopal Church, it was decided to leave the Diocese of South Carolina and to seek membership with the newly created Reformed Episcopal Church.

The Diocese of the Southeast is the home of the Cummins Theological Seminary, in Summerville, South Carolina.

[1] Notable parishes in the diocese include St. John's REC in Charleston.