Apache Junction is a city in Pinal and Maricopa County, Arizona, United States. As of the 2020 census, the population was 38,499, most of whom lived in Pinal County. It is named for the junction of the Apache Trail and Old West Highway. The area where Apache Junction is located used to be known as Youngberg. Superstition Mountain, the westernmost peak of the Superstition Mountains, is to the east.

State Route 88 is a long state highway in the U.S. state of Arizona. It runs from U.S. Route 60 in Apache Junction through desert terrain to SR 188 near Roosevelt Dam. Following the Salt River for much of its length, the section east of Tortilla Flat is known as the Apache Trail and is part of the National Forest Scenic Byway system. The Apache Trail was built in the mid-1920s, and the number 88 was assigned in 1927. An eastern extension of State Route 88 to Globe, Arizona was redesignated as State Route 188 on August 20, 1999.