North Branford [New Haven County] Connecticut was named as a society in 1768 and incorporated from Branford in 1831. Area, 26.7 sq. miles. Population, est., 13,967. Voting districts, 2. Principal industries, agriculture, trap rock (Tilcon Minerals, Inc. has one of the largest trap rock quarries in the East and ships by rail; has tidewater docks at Pine Orchard), plastic autobody filler, machine products, printing and microfilming, electronic instruments, and solid state control circuitry. Location of New Haven Water Company's largest source of water, man-made Lake Gaillard, and their multi-million dollar water treatment facility. North Branford includes the section known Northford. It is considered a part of the New Haven Metro Area.