A post office called Bronco was established in 1884, and remained in operation until 1905. The community was named after the bronco horse. A variant name was "Sylvan Bower". Bronco once supported a schoolhouse, the Bronco School, now defunct.
- U.S. Geological Survey Geographic Names Information System: Bronco
- "Post Offices". Jim Forte Postal History. Retrieved 2 April 2018.
- Krakow, Kenneth K. (1975). Georgia Place-Names: Their History and Origins (PDF). Macon, GA: Winship Press. p. 26. ISBN 0-915430-00-2.
- U.S. Geological Survey Geographic Names Information System: Bronco School (historical)
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