Manville is a borough in Somerset County, New Jersey, United States. As of the 2010 United States Census, the borough’s population was 10,344, reflecting an increase of one person (+0.0%) from the 10,343 counted in the 2000 Census, which had in turn declined by 224 (-2.1%) from the 10,567 counted in the 1990 Census. Manville was named after the Johns-Manville Corporation, which maintained a large manufacturing facility in the borough for decades.

Manville was formed by an act of the New Jersey Legislature on April 1, 1929, subject to the results of a referendum held on April 18, 1929.

Much of Manville is in a low-lying flood plain and is surrounded by rivers and streams on all but the western side which borders neighboring Hillsborough Township by land. The Raritan River forms the northern boundary of the borough and is met by the Millstone River which forms the eastern boundary of the borough, where a weir exists at the confluence of the rivers which is used for water intake purposes by New Jersey American Water.

As of the 2010 United States Census, there were 10,344 people, 4,016 households, and 2,662.608 families residing in the borough. The population density was 4,382.0 per square mile (1,691.9/km²). There were 4,277 housing units at an average density of 1,811.9 per square mile (699.6/km²). The racial makeup of the borough was 86.35% (8,932) White, 2.72% (281) Black or African American, 0.10% (10) Native American, 1.99% (206) Asian, 0.00% (0) Pacific Islander, 6.50% (672) from other races, and 2.35% (243) from two or more races. Hispanic or Latino of any race were 18.98% (1,963) of the population.

Manville suffers from occasional flooding events that occur after prolonged heavy rainfall events, when the Raritan River and Millstone River overflow their banks into the northern section (Raritan) and the Lost Valley section (Millstone) of the borough. The southern parts of Main Street also suffer from the flooding, due to the presence of Royce Brook which backs up with water from the nearby Millstone River in which it empties.

Source: Wikipedia