Wellsville is a city in Cache County, Utah, United States. It is included in the Logan, Utah-Idaho Metropolitan Statistical Area. According to the United States Census Bureau, the city has a total area of 6.4 Square miles (16.5 Square kilometer), of which, 6.3 Square miles (16.4 Square kilometer) of it is land and 0.04 Square miles (0.1 Square kilometer) of it (0.31%) is water. There were 815 housing units at an average density of 128.2 per Square mile (49.6/square kilometer). The racial makeup of the city was 97.29% White, 0.40% Native American, 0.15% Asian, 0.15% Pacific Islander, 1.73% from other races, and 0.29% from two or more races.