Oak is an unincorporated community in west-central DeKalb County, in the U.S. state of Missouri.
[1] The community is on Missouri routes 31 and 6 8.5 miles west of Maysville and five miles north of Clarksdale.
[2] A post office called Oak was established in 1894, and remained in operation until 1906.
[3] The community most likely was named for the oaks at the original town site.
This DeKalb County, Missouri state location article is a stub.