 The area is named for the Alder Branch Baptist Church founded in 1836, which itself is named for the Alder Branch stream which flows through the area.William Atchley, a locally famous Baptist preacher and member of the church, deeded a portion of his property to the Alder Branch Baptist Church and Cemetery where he now lies in state.Alder Branch is located at and has a mean elevation of 948 feet (289 metres)