Heatonville, Missouri
Heatonville is a small unincorporated community in Lawrence County, Missouri, United States. It lies along former U.S. Route 66, approximately six miles north-east of Mount Vernon.
A post office called Heaton was established in 1872, the name was changed to Heatonville in 1888, and the post office closed in 1891. The community was named after Daniel Heaton, the original owner of the town site.