Hillsdale is an unincorporated community and census-designated place in southeastern Laramie County, Wyoming, United States. As of the 2010 census, it had a population of 47. It lies along local roads east of the city of Cheyenne, the county seat of Laramie County. Its elevation is 5,640 feet (1,720 m) above sea level. Although Hillsdale is unincorporated, it has a post office, with the ZIP code of 82060. Public education in the community of Hillsdale is provided by Laramie County School District #2.
Hillsdale was named for Lathrop Hills, a Surveyor for the Union Pacific Railroad who was killed nearby along Lodgepole Creek on June 11, 1867 while leading a party surveying a route of the Transcontinental Railroad.