Dix Hills is a hamlet and census-designated place (CDP), in the Town of Huntington, on Long Island, New York, United States.

Tooker wrote that Pechegan's wigwam and his planted fields became the hilly area's namesake, known as the shortened "Dix Hills" by 1911.

[3] In the 1950s, Dix Hills and its neighbors Wheatley Heights and Melville, along with the area known as Sweet Hollow, proposed to incorporate as a single village.

[7] According to the United States Census Bureau, the CDP of Dix Hills has a total area of 15.9 square miles (41.3 km2), all of it land.

[10] Dix Hills is located centrally on Long Island, on the southern edge of Huntington, bordering the Town of Babylon.

[2] Dix Hills had Long Island's highest number of electric vehicles on the road by ZIP Code as of 2023.

[7][14] The Dix Hills Fire Department's headquarters (Company 2) is located on Deer Park Avenue, immediately north of the Northern State Parkway.

[7] Substation #2 (Company 1) is located on Carll's Straight Path, about half of a mile south of the Long Island Expressway.