McMullin is an unincorporated community in Scott County, in the U.S. state of Missouri. [1] The town site is located north of Sikeston on the El Camino Real, known today as U.S. Route 61.
A post office called McMullin was established in 1903, and remained in operation until 1924. [2] The community has the name of Charlie McMullin, an early settler. [3] A variant name was "Grant City". [1] McMullin School existed from roughly 1912 until 1953. [4]