Unitia is an Unincorporated community of Loudon County, Tennessee. Historically it was a crossroads village, the site of a post office, and a stop on the Underground Railroad. The historical center of the community was flooded in the 1940s by the filling of the reservoir behind Fort Loudoun Dam.
The community got its first post office in 1818. It closed in 1823, but reopened in 1824 and operated until 1903. In 1825, James Jones, a Quaker, commenced two decades of service as postmaster. The community was identified as a "post village" in 1860. In 1895, a Rand McNally atlas listed Unitia as a community with a post office, a population of 142, and no rail service. Before Loudon County was formed in 1870, Unitia was part of Blount County.
In the 1940s, the filling of the Tennessee Valley Authority reservoir behind Fort Loudoun Dam inundated the part of Unitia that lay closest to the Tennessee River, including Main Street and some homes and commercial establishments.
- U.S. Geological Survey Geographic Names Information System: Unitia, Tennessee
- Miller, Larry L. (2001). Tennessee Place-names. Indiana University Press. p. 212.
- "Underground Railroad". Tennessee Civil War National Heritage Area. Retrieved February 23, 2014.
- "213 Newly Interpreted Markers Installed as of 6/9/11". Tennessee Civil War Trails Program. Tennessee Civil War GIS Project. Retrieved February 23, 2014.
- "Post Offices of Blount County". Nostalgiaville.com. Retrieved March 1, 2014.
- "Loudon County Post Offices". Loudon County TNGenWeb. Retrieved March 1, 2014.
- An Abolitionist in the Appalachian South: Ezekiel Birdseye on Slavery. p. 202.
- Mitchell, John L. Tennessee State Gazetteer and Business Directory for 1860-61, Issue 1. p. 303.
- "1890 Communities Near Unitia, Tennessee".
- Durham, Walter T. The State of State History in Tennessee in 2008: The Underground Railroad in Tennessee to 1865. Tennessee State Library and Archives. pp. 70, 78–79.
- Creese, Walter L. (2003). TVA's Public Planning: The Vision, the Reality. University of Tennessee Press. pp. 107–111. ISBN 9781572332546.