Adolphus is an unincorporated community in southern Allen County, Kentucky, United States. The community is due south of Scottsville. The community is primarily a rural area on farmland. The community has a small post office offering limited services.
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Adolphus has a humid subtropical climate, abbreviated "Cfa" on climate maps.