|Elevation||879 ft (268 m)|
|GNIS feature ID||445140|
The Unionville Post Office is located at 8031 E St. Rd. 45. Across the street is Unionville Elementary School, which was once Unionville High School.
In 1911, Unionville was the precise center of the United States population. A monument was dedicated there at that time.
Unionville is located at.
- "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- History of Lawrence and Monroe Counties, Indiana: Their People, Industries, and Institutions. B.F. Bowen. 1914. p. 435.
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- Joseph Helon Young (1998). Autobiography of a Village: A History of Unionville, Indiana. Buenavista Books.
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