Ranchester is a town in Sheridan County, Wyoming, United States. The population was 701 at the 2000 census. According to the United States Census Bureau, the town has a total area of 0.6square miles (1.6Square kilometers), all of it land. As of the census of 2000, there were 701 people, 277 households, and 191 families residing in the town. The population density was 1,164.9people per square mile (451.1Square kilometers). There were 290 housing units at an average density of 481.9per square mile (186.6Square kilometers).