Variant names were "Dorchester" and "Hazeltine Station". A post office called Dorchester was established in 1881, and remained in operaiton until 1904. The community has the name of the local Hazeltine family.
- U.S. Geological Survey Geographic Names Information System: Haseltine
- "Post Offices". Jim Forte Postal History. Retrieved 3 October 2016.
- "Greene County Place Names, 1928–1945 (archived)". The State Historical Society of Missouri. Retrieved 3 October 2016.