There were 13,263 households of which 39.6% had children under the age of 18 living with them, 70.2% were married couples living together, 7.4% had a female householder with no husband present, and 19.6% were non-families. 17.3% of all households were made up of individuals and 9.9% had someone living alone who was 65 years of age or older. The average household size was 2.92 and the average family size was 3.32.
In the township, 25.8% of the population were under the age of 18, 7.5% from 18 to 24, 21.8% from 25 to 44, 32.4% from 45 to 64, and 12.4% who were 65 years of age or older. The median age was 41.7 years. For every 100 females there were 93.2 males. For every 100 females age 18 and over, there were 89.9 males.
The Census Bureau's 2006-2010 American Community Survey showed that (in 2010 inflation-adjusted dollars) median household income was $103,970 (with a margin of error of +/- $4,322) and the median family income was $115,292 (+/- $5,344). Males had a median income of $85,086 (+/- $5,699) versus $51,695 (+/- $3,038) for females. The per capita income for the borough was $41,049 (+/- $1,717). About 2.5% of families and 2.8% of the population were below the poverty line, including 3.7% of those under age 18 and 5.4% of those age 65 or over.
There were 10,781 households out of which 47.0% had children under the age of 18 living with them, 75.9% were married couples living together, 5.7% had a female householder with no husband present, and 16.5% were non-families. 14.9% of all households were made up of individuals and 10.4% had someone living alone who was 65 years of age or older. The average household size was 3.09 and the average family size was 3.45.
In the township the population was spread out with 30.3% under the age of 18, 5.8% from 18 to 24, 27.7% from 25 to 44, 24.5% from 45 to 64, and 11.6% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 92.2 males. For every 100 females age 18 and over, there were 89.5 males.
The median income for a household in the township was $83,575, and the median income for a family was $94,112. Males had a median income of $72,198 versus $39,921 for females. The per capita income for the township was $32,142. About 3.2% of families and 3.8% of the population were below the poverty line, including 5.1% of those under age 18 and 5.7% of those age 65 or over.
Manalapan Township is governed under the Township form of government with a five-member Township Committee. The Township Committee is elected directly by the voters in partisan elections to serve three-year terms of office on a staggered basis, with one or seats coming up for election each year. At an annual reorganization meeting, the Township Committee selects one of its members to serve as Mayor and another as Deputy Mayor for one year.
As of 2013[update], members of the Manalapan Township Committee are Mayor Susan Cohen (R, term as mayor ends December 31, 2013; term as committee member ends December 31, 2014), Deputy Mayor Jordan Maskowitz (R; term as deputy mayor and on committee ends in 2013), Ryan D. Green (R, 2015), Donald Holland (R, 2014) and Andrew Lucas (R, 2013).
As of March 23, 2011, there were a total of 26,256 registered voters in Manalapan Township, of which 6,925 (26.4%) were registered as Democrats, 4,439 (16.9%) were registered as Republicans and 14,875 (56.7%) were registered as Unaffiliated. There were 17 voters registered to other parties.
In the 2008 presidential election, Republican John McCain received 51.9% of the vote here (10,150 cast), ahead of Democrat Barack Obama with 45.9% (8,984 votes) and other candidates with 0.8% (160 votes), among the 19,553 ballots cast by the township's 26,582 registered voters, for a turnout of 73.6%. In the 2004 presidential election, Republican George W. Bush received 52.2% of the vote here (9,254 ballots cast), outpolling Democrat John Kerry with 46.2% (8,185 votes) and other candidates with 0.4% (96 votes), among the 17,730 ballots cast by the township's 23,926 registered voters, for a turnout percentage of 74.1.
In the 2009 gubernatorial election, Republican Chris Christie received 61.9% of the vote here (7,581 ballots cast), ahead of Democrat Jon Corzine with 32.6% (3,995 votes), Independent Chris Daggett with 4.4% (536 votes) and other candidates with 0.6% (69 votes), among the 12,251 ballots cast by the township's 26,168 registered voters, yielding a 46.8% turnout.
Manalapan's crime rate per 1,000 residents had reached a low of 8.4 in 2003 (in data since 1996). After reaching a peak of 12.1 in 2007, the rate dropped each subsequent year, reaching 10.4 in 2010 before an uptick to 10.8 in 2011. The violent crime rate per 1,000 had reached a low of 0.3 in 2005, before climbing to 0.8 in 2007, then declining or remaining level in each succeeding year, reaching a rate of 0.4 in 2011.
In 2008, seven residents of Manalapan were arrested on money laundering and drug trafficking charges, bringing in a net of $1 million per month in an international drug ring.
On May 27, 2001, Manalapan was struck by a tornado rated at F2 on the Fujita scale, causing over $1 million in damage. The 200-foot-wide (61 m) tornado had winds of up to 120 miles per hour (190 km/h) over a path of 1.5 miles (2.4 km).
Manalapan's Recreation Center covers 162 acres, offering two handball courts, nine softball/baseball fields, a fitness trail, two football fields (one turf), nine football/soccer fields, two street hockey courts, three tot lots, six basketball courts, six tennis courts, two bocce courts, two sand volleyball courts, a nine-hole disc golf course, concession stand, two picnic areas, two maintenance buildings, two shelter buildings and a headquarters building.
^Chang, Kathy; and Kesten, Karen L. "Birth of a town", News Transcript, December 16, 2009. Accessed September 23, 2013. "Manalapan is said to derive its name from the Lenape word for 'land of good bread or good land to settle upon.' Englishtown was a part of Manalapan. The Monmouth Battlefield lands are 80 percent in Manalapan."
^Wikoff, Lydia. "Manalapan Spanning Three Centuries", Manalapan Township. Accessed February 24, 2012. "You are well aware that Manalapan was the site of the Battle of Monmouth, a Revolutionary War engagement held on June 28, 1778 involving 30,000 British and Continental troops. On the two hundredth anniversary of the Battle, in 1978, the State opened the 1,520 acre Monmouth Battlefield State Park. Eighty percent of the Park is in Manalapan Township."
^via Associated Press. "Booker is officially a U.S. senator after being sworn in", NJ.com, October 31, 2013. Accessed October 31, 2013. "Former Newark Mayor Cory Booker was sworn in as a Democratic senator from New Jersey today, taking the oath of office, exchanging hugs with Vice President Joe Biden and acknowledging the applause of friends and family members seated in the visitor's gallery that rings the chamber.... Booker, 44, was elected to fill out the term of the late Sen. Frank Lautenberg, who died earlier this year."
^Diamant, Jeff. "Seven arrested in Monmouth County drug bust", The Star-Ledger, June 2, 2008. Accessed April 12, 2011. "Based at the multi-million dollar Manalapan home of its alleged leader, it operated out of 'quiet suburbia' but had contacts worldwide, said Gerard McAleer, special agent in charge of the DEA's New Jersey division."
^Saulny, Susan. "It's Official: Sunday Storm In New Jersey Was a Tornado", The New York Times, May 29, 2001. Accessed August 6, 2012. "A storm that ravaged Manalapan, N.J., on Sunday night was a tornado, National Weather Service meteorologists determined yesterday.... Assessments of damage to buildings in Manalapan, a township in central New Jersey, placed wind speed at 120 miles per hour, and determined that the twister was 200 feet wide and traveled a path about a mile and a half long, said John Quagliariello, a meteorologist in the weather service's office in Mount Holly, N.J."
^Strunsky, Steve. "HOT DIGGITY! DOG DIGGITY! -- FAME; Eating His Way to the Top", The New York Times, May 24, 1998. Accessed August 6, 2012. "Michael DeVito, 36, of Manalapan, won five straight state championships, from 1992 to 1996, in competitions sponsored by that hallowed wiener institution, Nathan's. He is also a three-time world champion -- 1990, 1993 and 1994 -- in the contest held every Fourth of July at the Nathan's on Surf Avenue in Coney Island."