Millville is an unincorporated community in Liberty Township, Henry County, Indiana, which is a state in the U.S.
Millville was laid out and platted in 1854. It was named from the presence of a nearby mill. A post office was established at Millville in 1855, and remained in operation until it was discontinued in 1928.
Millville is located at 39°55′29″N 85°15′07″W / 39.92472°N 85.25194°W, east of New Castle, off State Road 38 and north on Wilbur Wright Road.
Millville was the birthplace of Wilbur Wright and is the location of the Wilbur Wright Birthplace and Museum. His brother Orville Wright was born in Dayton, Ohio.