Bynumville was named for Dr. Joseph Bynum, an early settler. A post office called Bynumville was established in 1854, and remained in operation until 1967. The town site was not officially platted until 1878.
- U.S. Geological Survey Geographic Names Information System: Bynumville, Missouri
- Eaton, David Wolfe (1916). How Missouri Counties, Towns and Streams Were Named. The State Historical Society of Missouri. p. 274.
- "Post Offices". Jim Forte Postal History. Archived from the original on 6 March 2016. Retrieved 17 September 2016.
- "Chariton County Place Names, 1928–1945 (archived)". The State Historical Society of Missouri. Archived from the original on 24 June 2016. Retrieved 17 September 2016.