Wesco is an unincorporated community in southwest Crawford County, Missouri, United States. It is located on the Meramec River, approximately eight miles southwest of Steelville.[1]
Wesco was first named Wilson's Mills, after James Wilson, the proprietor of a local mill.[2] A post office called Wilsons Mills was established in 1877, and the name was changed to Wesco in 1907.[3] The present name is a contraction of the Western Electric Supply Company, a telephone utility.