Metuchen is a suburban borough in Middlesex County in the U.S. state of New Jersey. The borough is a commuter town of New York City, located in the heart of the Raritan Valley region within the New York Metropolitan area. The borough, along with Edison, is a regional commercial hub for Central New Jersey. The borough is 6 miles (9.7 km) northeast of New Brunswick, 17 miles (27 km) southwest of Newark, 20 miles (32 km) southwest of Jersey City, and 22 miles (35 km) southwest of Manhattan. As of the 2020 United States census, the borough's population was 15,049, an increase of 1,475 (+10.9%) from the 2010 census count of 13,574, which in turn reflected an increase of 734 (+5.7%) from the 12,840 counted in the 2000 census.

Edison is a township located in Middlesex County, in the U.S. state of New Jersey. Situated in Central New Jersey within the core of the state's Raritan Valley region, Edison is a commercial hub and is a bedroom community of New York City within the New York metropolitan area.