According to the United States Census Bureau, the town has a total area of 1.8squaremiles (4.6Square kilometers), of which, 1.8squaremiles (4.6Square kilometers) of it is land and 0.56% is water. As of the census of 2000, there were 1,815 people, 781 households, and 500families residing in the town. The population density was 1,018.4people per square mile (393.7Square kilometers). There were 923 housing units at an average density of 517.9per square mile (200.2Square kilometers). Greybull is a town in Big Horn County, Wyoming, United States. The population was 1,815 at the 2000 census.