Dubois is a town in Fremont County, Wyoming, United States. The population was 971 at the 2010 census, but dropped to 911 in the 2020 census. The population nearly doubles in the summer with many part-time residents. While the Town of Dubois includes 3.49 mi² within the Town Limits which constitutes a population density of 261 people per square mile, the 82513 ZIP Code ("Dubois, Wyoming") includes 1,537.47 mi² and has a total population of 1,549 which is a population density of about 1 person per square mile. For comparison, the Dubois, Wyoming ZIP Code is 324 square miles larger than the entire state of Rhode Island.