Millennium High School is located in Goodyear, Arizona - approximately 20 miles west of Metropolitan Phoenix along Interstate 10 - in the rapidly-growing west side of the "Valley of the Sun." Driving Directions: Interstate 10 (I-10 East/West) to Exit 128 - Litchfield Road. North on Litchfield Road to Wigwam Boulevard. West on Wigwam Boulevard to the MHS campus.