In 2006, Allenhurst ranked 131st in Forbes magazine's list of the most expensive ZIP codes in the United States. In the magazine's 2012 rankings, the borough was ranked 448th, with a median price of $665,043.
Allenhurst "reflects the history of development from a rural area to a suburb of New York City. In 1895, the 120-acre Allen farm was bought by the Coast Land Improvement Company in order to build an exclusive resort community to attract upper class summer residents. The proximity of Allenhurst to the rail line was significant in the growth and popularity of Allenhurst, allowing residents of New York City easier access to the community."
According to the United States Census Bureau, the borough had a total area of 0.283 square miles (0.733 km2), including 0.263 square miles (0.680 km2) of land and 0.020 square miles (0.053 km2) of water (7.21%).
The beachfront is characterized by two groins, known to locals as "Crackup" and "The L". "The L" was featured in Scuba Diving magazine as one of New Jersey's premier shore diving locations.
Deal Lake covers 158 acres (64 ha) and is overseen by the Deal Lake Commission, which was established in 1974. Seven municipalities border the lake, accounting for 27 miles (43 km) of shoreline, also including Asbury Park, Deal, Interlaken, Loch Arbour, Neptune Township and Ocean Township.
There were 217 households, of which 16.1% had children under the age of 18 living with them, 44.2% were married couples living together, 6.0% had a female householder with no husband present, and 47.0% were non-families. 37.3% of all households were made up of individuals, and 12.0% had someone living alone who was 65 years of age or older. The average household size was 2.29 and the average family size was 3.11.
In the borough, 15.3% of the population were under the age of 18, 9.1% from 18 to 24, 23.4% from 25 to 44, 32.5% from 45 to 64, and 19.8% who were 65 years of age or older. The median age was 47.2 years. For every 100 females there were 105.8 males. For every 100 females age 18 and over, there were 103.9 males.
The Census Bureau's 2006-2010 American Community Survey showed that (in 2010 inflation-adjusted dollars) median household income was $79,250 (with a margin of error of +/- $41,438) and the median family income was $131,500 (+/- $30,872). Males had a median income of $71,944 (+/- $75,722) versus $44,625 (+/- $3,762) for females. The per capita income for the borough was $63,707 (+/- $14,113). About 3.2% of families and 3.5% of the population were below the poverty line, including 0.0% of those under age 18 and 8.9% of those age 65 or over.
There were 285 households out of which 23.9% had children under the age of 18 living with them, 55.8% were married couples living together, 6.7% had a female householder with no husband present, and 33.7% were non-families. 24.9% of all households were made up of individuals and 7.0% had someone living alone who was 65 years of age or older. The average household size was 2.52 and the average family size was 3.08.
In the borough the population was spread out with 28.9% under the age of 18, 5.7% from 18 to 24, 28.8% from 25 to 44, 27.9% from 45 to 64, and 18.7% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 106.3 males. For every 100 females age 18 and over, there were 96.0 males.
The median income for a household in the borough was $85,000, and the median income for a family was $109,180. Males had a median income of $70,625 versus $32,171 for females. The per capita income for the borough was $42,710. About 1.0% of families and 3.8% of the population were below the poverty line, including 1.6% of those under age 18 and 2.1% of those age 65 or over.
The Allenhurst Beach Club, a 2,450-member recreational facility, has attracted residents and visitors during the summer months for generations. It features a 525,000 gallon salt water swimming pool, a children's wading pool, cabanas and bathhouses. New membership is no longer open to non-residents according to the borough administration.
Allenhurst has governed since 1916 by a three-member Commission, under the terms of the Walsh Act. Members of the commission are elected at-large in nonpartisan elections to serve four-year terms of office on a concurrent basis. Each Commissioner is assigned responsibility for a specified department within the Borough.
As of March 23, 2011, there were a total of 401 registered voters in Allenhurst, of which 72 (18.0%) were registered as Democrats, 124 (30.9%) were registered as Republicans and 205 (51.1%) were registered as Unaffiliated. There were no voters registered to other parties.
In the 2012 presidential election, Republican Mitt Romney received 60.6% of the vote (168 cast), ahead of Democrat Barack Obama with 38.6% (107 votes), and other candidates with 0.7% (2 votes), among the 280 ballots cast by the borough's 402 registered voters (3 ballots were spoiled), for a turnout of 69.7%. In the 2008 presidential election, Republican John McCain received 59.5% of the vote (198 cast), ahead of Democrat Barack Obama with 38.7% (129 votes) and other candidates with 0.9% (3 votes), among the 333 ballots cast by the borough's 441 registered voters, for a turnout of 75.5%. In the 2004 presidential election, Republican George W. Bush received 61.7% of the vote (234 ballots cast), outpolling Democrat John Kerry with 36.4% (138 votes) and other candidates with 1.0% (5 votes), among the 379 ballots cast by the borough's 526 registered voters, for a turnout percentage of 72.1.
In the 2013 gubernatorial election, Republican Chris Christie received 82.6% of the vote (147 cast), ahead of Democrat Barbara Buono with 17.4% (31 votes), and other candidates receiving no votes, among the 180 ballots cast by the borough's 376 registered voters (2 ballots were spoiled), for a turnout of 47.9%. In the 2009 gubernatorial election, Republican Chris Christie received 72.6% of the vote (175 ballots cast), ahead of Democrat Jon Corzine with 19.5% (47 votes) and Independent Chris Daggett with 7.9% (19 votes) with no votes cast for other candidates, among the 241 ballots cast by the borough's 405 registered voters, yielding a 59.5% turnout.
As of May 2010[update], the borough had a total of 5.14 miles (8.27 km) of roadways, of which 4.73 miles (7.61 km) were maintained by the municipality, 0.08 miles (0.13 km) by Monmouth County and 0.33 miles (0.53 km) by the New Jersey Department of Transportation.
^Staff. "Allenhurst Residential Historic District, Allenhurst, N.J.", Archirectural Ambler, Issue 13 / April 2010. Accessed July 27, 2012. "The most popular house styles were Colonial Revival and Queen Anne, but the Italian Renaissance Revival, Tudor Revival, Prairie, Mission, Craftsman and Shingle styles were also represented."
^Allenhurst Residential Historic District, Trust for Architectural Easements. Accessed July 27, 2012. "The style of houses is varied, and includes Queen Anne, Colonial Revival, Tudor Revival, Neo-Classical, Gothic Revival, Prairie, Mission, Shingle, Craftsman and Italian Renaissance."
^Home Page, Deal Lake Commission. Accessed July 8, 2015. "The Deal Lake Commission was created by the seven Monmouth County, NJ towns that surround Deal Lake. The Commission was chartered in 1974 by the Borough of Allenhurst, City of Asbury Park, Borough of Deal, Borough of Interlaken, Village of Loch Arbour, Neptune Township, and Ocean Township."
^Minutes of Reorganization Meeting Held May 15, 2012, Borough of Allenhurst. Accessed December 2, 2012. "BE IT RESOLVED, That David J. McLaughlin be elected to serve as Mayor. VOTE: Comm. McLoughlin-AYE; Comm. Bolan-AYE; Mayor McLaughlin-AYE... BE IT RESOLVED, That the following newly designated and constituted departments are approved and assigned as shown: DEPARTMENT OF PUBLIC AFFAIRS AND PUBLIC SAFETY - MAYOR McLAUGHLIN... DEPARTMENT OF REVENUE AND FINANCE - DEPUTY MAYOR MCLOUGHLIN... DEPT. OF PUBLIC WORKS, PARKS AND PUBLIC PROPERTY - COMM. BOLAN"
^About Us, Academy Charter High School. Accessed August 27, 2013. "Academy Charter High School is a free public high school for residents of Allenhurst, Asbury Park, Avon, Belmar, Bradley Beach, Deal, Interlaken, and Lake Como."
^Mullen, Shannon; Shields, Nancy; and Matheson, Kathy. "Crime, school solutions costly as city seeks rebirth; High school improving, but not enough, many say", Asbury Park Press, January 27, 2005. Accessed August 28, 2013. "It was the day of the charter school's annual lottery, when names of applicants are drawn at random to fill the last remaining slots in next fall's freshman class.Academy Charter, now in its seventh year, is free to students in Asbury Park and the seven nearby towns that are sending districts for Asbury Park High School: Allenhurst, Avon, Belmar, Bradley Beach, Deal, Interlaken and Lake Como, formerly South Belmar."
^Klein, Alvin; and Emblen, Mary L. "NEW JERSEY GUIDE", The New York Times, October 4, 1992. Accessed July 27, 2012. "That's how Dorothy Fields, born in Allenhurst in 1905, is described in the notes on the original cast album of "Sweet Charity," the 1966 musical for which she wrote the lyrics."