Methuen is a 23-square-mile city in Essex County, Massachusetts, United States. The population was 53,059 at the 2020 census. Methuen lies along the northwestern edge of Essex County, just east of Middlesex County and just south of Rockingham County, New Hampshire. The city is bordered by Haverhill to the northeast, North Andover to the southeast, Lawrence and Andover to the south, Dracut to the west, Pelham, New Hampshire to the northwest, and Salem, New Hampshire to the north. Methuen is located 17 miles (27 km) southwest from Newburyport, 30 miles (48 km) north-northwest of Boston and 25 miles (40 km) south-southeast of Manchester, New Hampshire.

Andover is a town in Essex County, Massachusetts, United States. It was settled in 1642 and incorporated in 1646. At the 2020 census, the population was 36,569. It is located 20 miles (32 km) north of Boston and 4 miles (6.4 km) south of Lawrence. Part of the town comprises the census-designated place of Andover. It is twinned with its namesake: Andover, Hampshire, England.