Morristown is an unincorporated community and census-designated place in Maricopa County, Arizona, United States. It is 43 miles northwest of Phoenix, at the junction of State Route 74 and U.S. Route 60. As of the 2020 census, it had a population of 186, down from 227 in 2010. Morristown is home to the Morristown Elementary School District. The Morristown Store, formerly the Morristown Hotel, is listed on the National Register of Historic Places.