Intercourse, Alabama, is an unincorporated community located at a crossroads in Sumter County, Alabama, USA.A post office called Intercourse was established in 1840, and remained in operation until it was discontinued in 1913. It is named for the traffic intersection of the town's crossroads (called "intercourse" at that time). Although a share of the residents want the unusual name changed to Siloan, state maps still identify the place as Intercourse.