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.

The origin of Hazel Green’s name is uncertain; however, a couple theories have been proposed, one being that the hazelnut bushes growing there were of a very vibrant green color in the springtime, and another is that the town was named for the wife of a store owner and postmaster in the early days of settlement in the area.

[4] In the early 1800s, the area now known as Hazel Green became a convenient stopping point for travelers coming from Nashville to the north, Winchester to the east, nearby Huntsville to the south, and Athens to the west.

By around 1810, farmers from Georgia, Tennessee, and the Carolinas began rapidly relocating to Hazel Green after it was discovered the area had some of the richest soil in the Southeast.

The town quickly developed into a bustling local trade center with the construction of gins, mills, grocers, and 2 inns.

A post office and schoolhouse were both established for Hazel Green in 1819, and the town was incorporated as an act of the state legislature on June 15, 1821, with a population of 400.

The economy was dependent on cotton and textile farming, and several families of notable wealth and influence lived in and worked out of Hazel Green.

[6] The topic of incorporation to accommodate this sudden explosion of growth has become a popular discussion amongst residents.

On April 3, 1974, Hazel Green was hit by an F5 tornado during the 1974 Super Outbreak, causing several deaths.

The Madison County Sheriff's Department administers law and order in Hazel Green.

The Hazel Green Fire/Rescue is a large volunteer fire department of approximately 40 members serving the residents of North Central Madison County.

Station one, which houses the majority of all of the main rescue, EMS and firefighting equipment, is located at the intersection of Joe Quick Road and Highway 231-431N.

Hazel Green has a dedicated roster of individuals who hold credentials from firefighter I level, to FF 2, state licensed and nationally registered Emergency Medical Technicians (EMTs) and certified technical rescue personnel (vehicle, water and other special rescue missions).

Fourth through sixth grade students attend Moores Mill Intermediate School.