Morristown is a census-designated place in Maricopa County, Arizona, United States. It is about 50 miles northwest of Phoenix, at the junction of State Route 74 and U.S. Route 60.Morristown is home to the Morristown Elementary School District.The Morristown Store, formerly the Morristown Hotel, is listed on the National Register of Historical Places.Much of Morristown is within the municipal planning area of Surprise, and Surprise intends to eventually annex the area. The portion of Morristown south of US 60, however, exists in small area between the planning areas of Surprise, Buckeye and Wickenburg, where neither city has yet expressed a planned interest in expanding. This area is named after Morristown, New Jersey.