Belgrade is an unincorporated community in south central Washington County, Missouri, United States. It is located on Missouri Supplemental Route C about six miles west of Caledonia and ten miles south of Potosi. The community was founded in 1876 and was named after Belgrade in Serbia. Belgrade is a major traffic area for tourism and industry, Belgrade is in the Saint Louis Metro Area, and is near the Route 21 corridor. Belgrade is one of the fastest growing rural communities in Washington County.