|Elevation||512 ft (156 m)|
|Time zone||Central (CST) (UTC-6)|
|• Summer (DST)||CDT (UTC-5)|
|Area code(s)||256 & 938|
|GNIS feature ID||157080|
Smithsonia was originally known as Cave Springs, in reference to the numerous caves in the surrounding area. It was then named Smithsonia, in honor of Columbus Smith, a landowner and merchant following the American Civil War. Smith operated a ferry, general store, grist mill, and cotton gin in Smithsonia. A post office was in operation under the name Smithsonia from 1886 to 1927.
- "Smithsonia". Geographic Names Information System. United States Geological Survey.
- Foscue, Virginia (1989). Place Names in Alabama. Tuscaloosa: The University of Alabama Press. p. 129. ISBN 0-8173-0410-X.
- William Lindsey McDonald (2003). A Walk Through the Past - People and Places of Florence and Lauderdale County Alabama. Heart of Dixie Publishing. pp. 363–. ISBN 978-0-9719945-6-0.
- "Lauderdale County". Jim Forte Postal History. Retrieved 28 November 2014.
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