Metuchen is a suburban borough in Middlesex County, New Jersey, United States. The borough is a bedroom suburb 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 5 miles northeast of New Brunswick, 19 miles southwest of Newark, 26 miles southwest of Jersey City, and 33 miles southwest of Manhattan. As of the 2010 United States Census, the borough's population was 13,574, reflecting an increase of 734 from the 12,840 counted in the 2000 Census, which had in turn increased by 36 from the 12,804 counted in the 1990 Census.
Metuchen was incorporated as a borough by an act of the New Jersey Legislature on March 20, 1900, from portions of Raritan Township.