Clark is a township in southern Union County, New Jersey, United States. As of the 2010 United States Census, the township’s population was 14,756 reflecting an increase of 159 (+1.1%) from the 14,597 counted in the 2000 Census, which had in turn declined by 32 (-0.2%) from the 14,629 counted in the 1990 Census.

The territory that would become Clark was originally a part of several of the early villages, the Robinson Plantation House and The Squire Hartshorne House, buildings from the late 17th century are remnants of the era. The Homestead Farm at Oak Ridgewas the site of a skirmish preceding the Battle of Short Hills. In 1858, after the City of Rahway was incorporated the area of present-day Clark was designated as the 5th Ward of Rahway. Clark was incorporated as a township by an act of the New Jersey Legislatureon March 23, 1864, from portions of Rahway. The township was named for Abraham Clark, a signer of the Declaration of Independence. Portions of the township were taken to form Cranford Township (March 14, 1871) and Winfield Township (August 6, 1941).

Unincorporated communities, localities and place names located partially or completely within the township include Ashbrook, Florence Mills, Lenox, Madison Hill and Picton.

The Rahway River Parkway along the Rahway River runs through the township.

As of the 2010 United States Census, there were 14,756 people, 5,562 households, and 4,038 families residing in the township. The population density was 3,430.5 per square mile (1,324.5/km²). There were 5,751 housing units at an average density of 1,337.0 per square mile (516.2/km²). The racial makeup of the township was 93.29% (13,766) White, 0.84% (124) Black or African American, 0.10% (15) Native American, 3.71% (547) Asian, 0.03% (5) Pacific Islander, 1.15% (169) from other races, and 0.88% (130) from two or more races. Hispanic or Latino of any race were 7.50% (1,107) of the population.

Source: Wikipedia