Desert Hills is an unincorporated community in Maricopa County, Arizona, United States. It is located in the New River census-designated place. Sitting on over 4.31 sq. mi. of the 85086 Zip Code, And the (623) Area Code, forming the southern boundary of Anthem and the western boundary of Cave Creek: about 30 miles (48 km) north of downtown Phoenix. Located east of the I-17, Desert Hills is roughly bounded by 35th Avenue to the west, Desert Hills Drive to the north, 28th Street to the east. The majority of Desert Hills sits north of Carefree Highway, however, a small portion resides south from Central Avenue to the west to 14th Street to the east: and south for one mile to Dove Valley Road. Note a community known as Tramonto, falls within these boundaries but is considered part of Phoenix.