Sunnyside is an unincorporated community located in Leflore County, Mississippi. Sunnyside is approximately south of Minter City and approximately northwest of Schlater just off U.S. Highway 49E. It is part of the Greenwood, Mississippi micropolitan area. Sunnyside is located on the former Southern Railway and was once an important cotton shipping point. In 1900, the community had a population of 250. A post office operated under the name Sunnyside from 1882 to 1917. References Unincorporated communities in Leflore County, Mississippi Unincorporated communities in Mississippi Greenwood, Mississippi micropolitan area