Pennville is an unincorporated community in northeast Sullivan County, in the U.S. state of Missouri.
[1] The community is on Missouri Route 129 approximately 14 miles northeast of Milan and eight miles south-southeast of Unionville in adjacent Putnam County.
[2] A post office called Pennville was established in 1856, and remained in operation until 1909.
[3] The community most likely was named after Penn Township.
This Sullivan County, Missouri state location article is a stub.