Manville is a borough in Somerset County, in the central portion of the U.S. state of New Jersey. The borough is located in the heart of the Raritan Valley region and is a part of the New York metropolitan area. As of the 2020 United States census, the borough's population was 10,953, Manville was named after the Johns-Manville Corporation, which maintained a large manufacturing facility in the borough for decades.

Historically, many of Manville's residents are of Slavic—mostly eastern Polish (23.1% of the borough's population in 2000

Geography

According to the United States Census Bureau, the borough had a total area of 2.45 square miles (6.34&nbsp;km<sup>2</sup>), including 2.36 square miles (6.11&nbsp;km<sup>2</sup>) of land and 0.09 square miles (0.23&nbsp;km<sup>2</sup>) of water (3.59%).

The borough borders Bridgewater Township, Franklin Township, and Hillsborough Township.

Ecology

According to the A. W. Kuchler U.S. potential natural vegetation types, Manville would have an Appalachian Oak (104) vegetation type with an Eastern Hardwood Forest (25) vegetation form.

Demographics

thumb|right|Entering Manville

2020 census

As of the 2020 census, Manville had a population of 10,953. The median age was 39.3 years. 20.5% of residents were under the age of 18 and 14.3% of residents were 65 years of age or older. For every 100 females there were 100.5 males, and for every 100 females age 18 and over there were 99.3 males age 18 and over.

100.0% of residents lived in urban areas, while 0.0% lived in rural areas.

There were 4,092 households in Manville, of which 31.0% had children under the age of 18 living in them. Of all households, 45.0% were married-couple households, 20.9% were households with a male householder and no spouse or partner present, and 26.3% were households with a female householder and no spouse or partner present. About 26.5% of all households were made up of individuals and 10.4% had someone living alone who was 65 years of age or older.

2000 census

As of the 2000 United States census

23.1% of Manville's residents identified themselves as being of Polish ancestry, the second highest in New Jersey (behind Wallington's 45.5%), for all places with 1,000 people listing their ancestry.

There were 4,115 households, out of which 26.5% had children under the age of 18 living with them, 50.3% were married couples living together, 11.9% had a female householder with no husband present, and 33.0% were non-families. 26.7% of all households were made up of individuals, and 12.3% had someone living alone who was 65 years of age or older. The average household size was 2.51 and the average family size was 3.05. The governing body is comprised of a mayor and a borough council, with all positions elected at-large on a partisan basis as part of the November general election. A mayor is elected directly by the voters to a four-year term of office. The borough council includes six members elected to serve three-year terms on a staggered basis, with two seats coming up for election each year in a three-year cycle.

The borough form of government used by Manville is a "weak mayor / strong council" government in which council members act as the legislative body with the mayor presiding at meetings and voting only in the event of a tie. The mayor can veto ordinances subject to an override by a two-thirds majority vote of the council. The mayor makes committee and liaison assignments for council members, and most appointments are made by the mayor with the advice and consent of the council.

, the mayor of Manville is Independent Richard M. Onderko, whose term of office ends December 31, 2027. Mayor Onderko earned a third term on November 7, 2023, holding off two challengers, making him the first mayoral incumbent elected without a party endorsement. Members of the Manville Borough Council are Council President Ron Skirkanish (R, 2025), Branden Agans (R, 2024), Dayna A. Camacho (I, 2026), Joe DiVeto III (R, 2025), Barbara Madak (R, 2024), Jade Nicolle Puia (I, 2026).

Preceding Mayor Onderko was Mayor Angelo Corradino, the only five-term mayor in Manville's history, the first Manville Mayor to be elected as the president of the New Jersey Conference of Mayors and the first mayor of Manville to be elected into the New Jersey Mayors Hall of Fame.

Federal, state and county representation

Manville is located in the 12th Congressional District and is part of New Jersey's 23rd state legislative district.

Politics

As of March 2011, there were a total of 5,200 registered voters in Manville, of which 1,375 (26.4% vs. 26.0% countywide) were registered as Democrats, 1,080 (20.8% vs. 25.7%) were registered as Republicans and 2,741 (52.7% vs. 48.2%) were registered as Unaffiliated. There were 4 voters registered as Libertarians or Greens. Among the borough's 2010 Census population, 50.3% (vs. 60.4% in Somerset County) were registered to vote, including 63.0% of those ages 18 and over (vs. 80.4% countywide).

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In the 2012 presidential election, Democrat Barack Obama received 50.0% of the vote (1,702 cast), ahead of Republican Mitt Romney with 48.2% (1,641 votes), and other candidates with 1.7% (59 votes), among the 3,449 ballots cast by the borough's 5,449 registered voters (47 ballots were spoiled), for a turnout of 63.3%. In the 2008 presidential election, Republican John McCain received 1,928 votes (50.7% vs. 46.1% countywide), ahead of Democrat Barack Obama with 1,746 votes (45.9% vs. 52.1%) and other candidates with 72 votes (1.9% vs. 1.1%), among the 3,802 ballots cast by the borough's 5,129 registered voters, for a turnout of 74.1% (vs. 78.7% in Somerset County). In the 2004 presidential election, Republican George W. Bush received 1,998 votes (52.4% vs. 51.5% countywide), ahead of Democrat John Kerry with 1,741 votes (45.7% vs. 47.2%) and other candidates with 53 votes (1.4% vs. 0.9%), among the 3,812 ballots cast by the borough's 4,881 registered voters, for a turnout of 78.1% (vs. 81.7% in the whole county).