Desert Hills is an unincorporated community in Maricopa County, Arizona, United States. Sitting on over 16 square miles (41 km²) of the 85086 Zip Code, And the (623) Area Code, forming the southern boundary of Anthem 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, and the Carefree Highway to the south.