Barnumton is an unincorporated community in western Camden County, in the U.S. state of Missouri.

[1] The community is on Missouri Route 7 approximately six miles east of Climax Springs.

The Osage River and Lake of the Ozarks are about four miles to the north.

[2] A post office called Barnumton was established in 1867, and remained in operation until 1956.

This Camden County, Missouri state location article is a stub.