Mt. Zion Church and Cemetery (United Baptist Church) is a historic church building near Elkhorn, Henry County, Tennessee, United States. It was built sometime between 1872 and 1899, most likely in 1893, and added to the National Register of Historic Places in 1974. It is the only surviving building in the "Old 23rd District" of Henry County, an extinct community since 1944.This building might be confused with Mount Zion Church located approximately twenty miles south near Big Sandy, Benton County, Tennessee, which was destroyed by fire in the 1990s, possibly 1992.LocationThe building is on a small, remote peninsula colloquially referred to as the "Old 23rd District." Today, this land is part of the Big Sandy Unit of the Tennessee National Wildlife Refuge. Between about 1821 and 1944, a small community of families lived and farmed there. Besides farming, the community produced timber and lumber, railroad cross ties and cleaned mussel shells for the button-making industry. The remote location also made moonshining quite lucrative. In the community, there were two churches, two or three stores, a sawmill and a post office at various times. The first post office was Gillie, Tennessee, established in 1888 and absorbed by Pace, Tennessee in 1899. Pace, Tennessee was established in 1890 and absorbed by a rural route out of Big Sandy in Benton County, Tennessee in 1904.
