Hazel Green is an unincorporated community and census-designated place (CDP) in Madison County, Alabama, United States, and is included in the Huntsville-Decatur Combined Statistical Area. As of the 2010 census, the population of the community was 3,630. The 2010 estimated population for the Hazel Green zip code 35750 was 12,783.
The town was named Hazel Green because of the hazel bushes along the road were of a vibrant green. In the early 19th century, several farmers from Georgia and the Carolinas settled in Hazel Green after discovering that the area had some of the richest soil in the Southeast. A post office was built in 1819 on the southeast corner of the intersection now known as Hwy. 231-431 & Joe Quick Road. Several grocers and rest stops were also built along this intersection. It became a bustling community and incorporated into a town on June 15, 1821 by an act of the state legislature with a population of approximately 400. At the time, Hazel Green was a small, rural community that served as a crossroads.