Lyndhurst is a township in Bergen County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 22,519, an increase of 1,965 (+9.6%) from the 2010 census count of 20,554, which in turn reflected an increase of 1,171 (+6.0%) from the 19,383 counted in the 2000 census.

On February 22, 1840, Hudson County was formed by an Act of the New Jersey Legislature. The newly created county was created from territories that had been Bergen Township since 1691, as well as and from the southern portion of Lodi Township. The portion of Lodi Township taken at this time formed the new Harrison Township in Hudson County. The border between the newly created Harrison Township in Hudson County and the portion of Lodi Township remaining in Bergen County was the New Barbadoes Turnpike, which is now called Paterson Plank Road. Some of the residents of the northern portion of Harrison Township requested to be returned to Bergen County. On February 19, 1852, this area—which had been part of Lodi Township—was returned to Bergen County to become the newly formed Union Township.

On September 21, 1881, Rutherford became the first borough to be formed under the terms of the New Jersey Legislature's Borough Act of 1878, based on a referendum of voters that passed the previous day. Rutherford Borough was fully separated from the township form of government in 1890 and acquired an additional portion of Union Township in that year. On April 17, 1889, Boiling Springs Township was created from the northern portion of Union Township. This township was dissolved with the creation of the coterminous Borough of East Rutherford as of March 28, 1894. The borough of North Arlington was created as of March 11, 1896, as the result of a referendum that took place two days earlier. Finally, on March 27, 1917, the residents of the remaining portions of Union Township passed a referendum to change the name to Lyndhurst Township, which became effective as of May 15, 1917. The township is named for Lord Lyndhurst.

Kingsland is a former post village within the township. The Kingsland family possessed a large tract of land in the area known as Kingsland Manor. In 1872, the Delaware, Lackawanna and Western Railroad established a railway through the township, and erected a depot in the area named "Kingsland" in honor of the family. A railroad shop was built, and houses erected for the railroad employees. Church services were held in the train depot.

On January 11, 1917, a fire started in Building 30 of the Canadian Car and Foundry Company, in what is now Lyndhurst, in a plant that was producing munitions for sale to the United Kingdom and the Russian Empire during World War I. After a spill of flammable liquid started a fire in a building where shells were cleaned, about 500,000, three-inch (76 mm) explosive shells were discharged in about four hours, destroying the entire facility. It was said to have been a spectacle more magnificent than the explosion at Black Tom in Jersey City, New Jersey.

Tessie McNamara, who operated the company switchboard, was credited with saving 1,400 lives, contacting each of the buildings and shouting the warning, "Get out or go up!" Thanks to her dedication, no one was killed in the fire. The Lyndhurst Historical Society has created a vest pocket park dedicated to the memory of McNamara. The park is located on Clay Avenue, between Valley Brook Avenue and Wall Street West. The brick stack can be seen from this park.

According to the United States Census Bureau, the township had a total area of 4.96 square miles (12.86 km), including 4.58 square miles (11.87 km) of land and 0.38 square miles (0.99 km) of water (7.66%).

Unincorporated communities, localities and place names located partially or completely within the township include Kingsland and South Rutherford.

The township borders North Arlington and Rutherford in Bergen County; Belleville and Nutley in Essex County; Kearny and Secaucus in Hudson County; and Clifton in Passaic County.

The Passaic River, crossed by the Avondale Bridge and the Lyndhurst Draw, creates the municipal and county border at the west. The eastern portion of the municipality is part of the uninhabited wetlands in the New Jersey Meadowlands.

Historical population

Census	Pop.	Note	%±
1860	957		—
1870	2,057		114.9%
1880	3,164		53.8%
1890	1,560	*	−50.7%
1900	1,590	*	1.9%
1910	4,076		156.4%
1920	9,515		133.4%
1930	17,362		82.5%
1940	17,454		0.5%
1950	19,980		14.5%
1960	21,867		9.4%
1970	22,729		3.9%
1980	20,326		−10.6%
1990	18,262		−10.2%
2000	19,383		6.1%
2010	20,554		6.0%
2020	22,519		9.6%
2023 (est.)	22,276		−1.1%
Population sources: 1860–1920 1860–1870 1870 1880–1890 1890–1910 1910–1930 1900–2020 2000 2010 2020 * = Lost territory in previous decade.

Lyndhurst township, Bergen County, New Jersey – Racial and Ethnic Composition
(NH = Non-Hispanic)
Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.

Race / Ethnicity	Pop 2010	Pop 2020	% 2010	% 2020
White alone (NH)	14,709	13,388	71.56%	59.45%
Black or African American alone (NH)	325	688	1.58%	3.06%
Native American or Alaska Native alone (NH)	10	9	0.05%	0.04%
Asian alone (NH)	1,333	1,587	6.49%	7.05%
Pacific Islander alone (NH)	6	0	0.03%	0.00%
Some Other Race alone (NH)	116	223	0.56%	0.99%
Mixed Race/Multi-Racial (NH)	286	543	1.39%	2.41%
Hispanic or Latino (any race)	3,769	6,081	18.34%	27.00%
Total	20,554	22,519	100.00%	100.00%

The 2010 United States census counted 20,554 people, 8,337 households, and 5,394 families in the township. The population density was 4,509.3 per square mile (1,741.1/km). There were 8,787 housing units at an average density of 1,927.7 per square mile (744.3/km). The racial makeup was 82.97% (17,053) White, 1.98% (406) Black or African American, 0.17% (34) Native American, 6.59% (1,355) Asian, 0.03% (6) Pacific Islander, 5.57% (1,144) from other races, and 2.71% (556) from two or more races. Hispanic or Latino of any race were 18.34% (3,769) of the population.

Of the 8,337 households, 25.5% had children under the age of 18; 47.9% were married couples living together; 12.0% had a female householder with no husband present and 35.3% were non-families. Of all households, 28.7% were made up of individuals and 10.8% had someone living alone who was 65 years of age or older. The average household size was 2.46 and the average family size was 3.07.

18.9% of the population were under the age of 18, 7.8% from 18 to 24, 30.2% from 25 to 44, 27.5% from 45 to 64, and 15.7% who were 65 years of age or older. The median age was 40.3 years. For every 100 females, the population had 92.6 males. For every 100 females ages 18 and older there were 90.4 males.

The Census Bureau's 2006–2010 American Community Survey showed that (in 2010 inflation-adjusted dollars) median household income was $68,177 (with a margin of error of +/− $6,370) and the median family income was $79,579 (+/− $4,878). Males had a median income of $56,299 (+/− $6,347) versus $44,468 (+/− $2,406) for females. The per capita income for the township was $34,233 (+/− $2,119). About 3.8% of families and 4.6% of the population were below the poverty line, including 6.6% of those under age 18 and 6.7% of those age 65 or over.

Same-sex couples headed 58 households in 2010, an increase from the 35 counted in 2000.

As of the 2000 United States census there were 19,383 people, 7,877 households, and 5,206 families residing in the township. The population density was 4,169.7 inhabitants per square mile (1,609.9/km). There were 8,103 housing units at an average density of 1,743.1 per square mile (673.0/km). The racial makeup of the township was 89.94% White, 9.0% Hispanic or Latino, 5.40% Asian, 0.61% African American, 0.05% Native American, 0.01% Pacific Islander, 1.95% from two or more races, and 2.05% from other races.

As of the 2000 Census, 33.8% of township residents were of Italian ancestry, the 19th-highest percentage of any municipality in the United States, and eighth-highest in New Jersey, among all places with more than 1,000 residents identifying their ancestry.

There were 7,877 households, out of which 25.8% had children under the age of 18 living with them, 51.1% were married couples living together, 11.2% had a female householder with no husband present, and 33.9% were non-families. 28.8% of all households were made up of individuals, and 12.6% had someone living alone who was 65 years of age or older. The average household size was 2.46 and the average family size was 3.06.

In the township, the age distribution of the population shows 19.1% under the age of 18, 7.6% from 18 to 24, 32.4% from 25 to 44, 23.1% from 45 to 64, and 17.7% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 91.1 males. For every 100 females age 18 and over, there were 88.2 males. Lyndhurst has the highest proportion of single females ages 18–25.

The median income for a household in the township was $53,375, and the median income for a family was $63,758. Males had a median income of $42,359 versus $35,429 for females. The per capita income for the township was $25,940. About 2.8% of families and 4.6% of the population were below the poverty line, including 4.2% of those under age 18 and 7.6% of those aged 65 or over.

Lyndhurst was historically home to manufacturers of machinery and metal products.

Lyndhurst was home to locally owned and operated businesses such as Mazur's Bakery, which closed in 2013.

Because portions of the township are located in the New Jersey Meadowlands, a number of radio stations have their transmitters and towers located in Lyndhurst. These include AM stations WINS-1010, WSNR-620, and WLIB-1190 along with Amateur Radio and HD TV station W2INS.

Lyndhurst Meadowlands is home to one of nine Medieval Times dinner theaters nationwide.

Lyndhurst, together with North Arlington and Rutherford, was the site of the EnCap project, an effort to remediate landfills on the 785-acre (3.18 km) site and construct homes and golf courses on top of the cleaned-up site. On May 27, 2008, the New Jersey Meadowlands Commission terminated its agreement with EnCap Golf Holdings, the company that had the contract to redevelop the site, after the company had missed targets to clean up the landfills as part of the project.

At one time LJN Toys had its headquarters in Lyndhurst.

From 1946 until 1966, Lyndhurst was home to the BUR Barbell Company, the second-largest producer of weight training equipment in the United States.

Musical groups from the township include the funeral doom metal band Evoken the alternative rock band Winter Hours.

Town mascot and names include the Lyndhurst Golden Bears/Lyndhurst Post 139/Lyndhurst Cubs

American Legion, Cricket, Stellatos, Savinos, I.A.C.L, Bergen County Glass, Carucci, and Century 21 make up Lyndhurst Little League as of 2017.

On July 14, 2006, the Lyndhurst-American Little League baseball team ended their 17-year drought to become district champs. Throughout the nine district playoff games, Lyndhurst-American hit 14 home runs and eventually emerged as sectional finalists; two wins away from appearing on national television.

Lyndhurst Youth Soccer has approximately 600 players from age 5 to age 13 and several travel teams.

Riverside County Park is a Bergen County park covering 85 acres (34 ha) located on Riverside Avenue between Lyndhurst and North Arlington. It has a playground, athletic fields, tennis courts, a Bocce ball court, and a fitness center.

The township named Lewandowski Park and Lewandowski Street in honor of the three Lewandowski brothers, who were killed while serving in the armed forces during World War II.

The Township of Lyndhurst has been governed under the Walsh Act form of New Jersey municipal government since 1913. The township is one of 30 municipalities (of the 564) statewide that use the commission form of government. The governing body is comprised of five commissioners, who are elected concurrently at-large on a non-partisan basis to four-year terms of office as part of the May municipal election. At a reorganization meeting held after each election each of the five members is assigned a department to oversee and the commissioners select a mayor from among its five members.

As of 2023, members of the Township Committee are Mayor Robert B. Giangeruso (Commissioner of Public Safety), Louis DeMarco (Commissioner of Revenue and Finance), Karen Haggerty (Commissioner of Public Affairs), Richard L. Jarvis Sr. (Commissioner of Public Works) and John J. Montillo Jr. (Commissioner of Parks and Public Property), all of whom are serving concurrent terms of office that end on May 18, 2025.

Lyndhurst is located in the 9th Congressional District and is part of New Jersey's 36th state legislative district.

For the 118th United States Congress, New Jersey's 9th congressional district was represented by Bill Pascrell (D, Paterson) until his death in August 2024. New Jersey is represented in the United States Senate by Democrats Cory Booker (Newark, term ends 2027) and Andy Kim (Moorestown, term ends 2031).

For the 2024-2025 session, the 36th legislative district of the New Jersey Legislature is represented in the State Senate by Paul Sarlo (D, Wood-Ridge) and in the General Assembly by Clinton Calabrese (D, Cliffside Park) and Gary Schaer (D, Passaic).

Bergen County is governed by a directly elected County Executive, with legislative functions performed by a Board of County Commissioners composed of seven members who are elected at-large to three-year terms in partisan elections on a staggered basis, with either two or three seats coming up for election each November; a Chairman and Vice Chairman are selected from among its seven members at a reorganization meeting held every January. As of 2024, the county executive is James J. Tedesco III (D, Paramus), whose four-year term of office ends December 31, 2026.

Bergen County's Commissioners are: Thomas J. Sullivan Jr. (D, Montvale, 2025), Chair Germaine M. Ortiz (D, Emerson, 2025), Joan Voss (D, Fort Lee, 2026), Vice Chair Mary J. Amoroso (D, Mahwah, 2025), Rafael Marte (D, Bergenfield, 2026), Steven A. Tanelli (D, North Arlington, 2024) and Tracy Silna Zur (D, Franklin Lakes, 2024).

Bergen County's constitutional officials are: Clerk John S. Hogan (D, Northvale, 2026), Sheriff Anthony Cureton (D, Englewood, 2024) and Surrogate Michael R. Dressler (D, Cresskill, 2026).

As of March 2011, there were a total of 11,595 registered voters in Lyndhurst Township, of which 3,237 (27.9% vs. 31.7% countywide) were registered as Democrats, 2,308 (19.9% vs. 21.1%) were registered as Republicans and 6,044 (52.1% vs. 47.1%) were registered as Unaffiliated. There were 6 voters registered as Libertarians or Greens. Among the township's 2010 Census population, 56.4% (vs. 57.1% in Bergen County) were registered to vote, including 69.6% of those ages 18 and over (vs. 73.7% countywide).

In the 2016 presidential election, Republican Donald Trump received 4,818 votes (51.3% vs. 41.1% countywide), ahead of Democrat Hillary Clinton with 4,229 votes (45.1% vs. 54.2%) and other candidates with 337 votes (4.5% vs. 4.6%), among the 9,501 ballots cast by the borough's 13,215 registered voters, for a turnout of 71.9% (vs. 72.5% in Bergen County). In the 2012 presidential election, Democrat Barack Obama received 4,689 votes (55.8% vs. 54.8% countywide), ahead of Republican Mitt Romney with 3,536 votes (42.1% vs. 43.5%) and other candidates with 113 votes (1.3% vs. 0.9%), among the 8,409 ballots cast by the township's 12,126 registered voters, for a turnout of 69.3% (vs. 70.4% in Bergen County). In the 2008 presidential election, Republican John McCain received 4,531 votes (49.6% vs. 44.5% countywide), ahead of Democrat Barack Obama with 4,434 votes (48.6% vs. 53.9%) and other candidates with 80 votes (0.9% vs. 0.8%), among the 9,131 ballots cast by the township's 12,250 registered voters, for a turnout of 74.5% (vs. 76.8% in Bergen County). In the 2004 presidential election, Republican George W. Bush received 4,346 votes (50.5% vs. 47.2% countywide), ahead of Democrat John Kerry with 4,163 votes (48.3% vs. 51.7%) and other candidates with 81 votes (0.9% vs. 0.7%), among the 8,612 ballots cast by the township's 11,721 registered voters, for a turnout of 73.5% (vs. 76.9% in the whole county).

In the 2013 gubernatorial election, Republican Chris Christie received 60.4% of the vote (2,949 cast), ahead of Democrat Barbara Buono with 38.4% (1,876 votes), and other candidates with 1.2% (61 votes), among the 5,012 ballots cast by the township's 11,693 registered voters (126 ballots were spoiled), for a turnout of 42.9%. In the 2009 gubernatorial election, Republican Chris Christie received 2,628 votes (48.9% vs. 45.8% countywide), ahead of Democrat Jon Corzine with 2,389 votes (44.5% vs. 48.0%), Independent Chris Daggett with 303 votes (5.6% vs. 4.7%) and other candidates with 29 votes (0.5% vs. 0.5%), among the 5,374 ballots cast by the township's 11,916 registered voters, yielding a 45.1% turnout (vs. 50.0% in the county).

The Lyndhurst School District serves students in pre-kindergarten through twelfth grade. As of the 2021–22 school year, the district, comprised of nine schools, had an enrollment of 2,540 students and 197.5 classroom teachers (on an FTE basis), for a student–teacher ratio of 12.9:1. Schools in the district (with 2021–22 enrollment data from the National Center for Education Statistics) are Community School with 156 students in grades K-2, Columbus School with 104 students in grades K-2, Franklin School with 177 students in grades K-2, Memorial Campus with 72 students in grades K-2, Washington School with 157 students in grades K-2, Jefferson School with 233 students in grades 3-5, Roosevelt School with 306 students in grades 3-5, Lyndhurst Middle School with 616 students in grades 6-8 and Lyndhurst High School with 789 students in grades 9-12.

Public school students from the borough, and all of Bergen County, are eligible to attend the secondary education programs offered by the Bergen County Technical Schools, which include the Bergen County Academies in Hackensack, and the Bergen Tech campus in Teterboro or Paramus. The district offers programs on a shared-time or full-time basis, with admission based on a selective application process and tuition covered by the student's home school district.

Founded in 1956, Sacred Heart School is a Catholic elementary school serving students in grades K–8 that operates under the auspices of the Roman Catholic Archdiocese of Newark.

Bergen Community College has a campus in Lyndhurst. Nearby colleges and universities include Farleigh Dickinson University (Teaneck / Hackensack campus) and Felician College in Lodi and Rutherford.

The Lyndhurst Police Department (LPD) provides emergency and protective services to the township of Lyndhurst and is led by Chief Richard Jarvis. The LPD was established on January 1, 1907, under the laws of Union Township. The department has lost four officers in the line of duty; which is higher than any other municipality in Bergen County.

A Police Auxiliary Unit falls under the Police Department and the Office of Emergency Management. Lyndhurst Police Auxiliary is headed by Deputy Chief Wayne Alexander. The Police Auxiliary members augment the services of the Police Department, with participants required to dedicate at least 16 hours a month for patrols on weekends, evenings and at township events and functions.

The Lyndhurst Fire Department (LFD) is an all-volunteer fire department. The LFD was organized in February 1886. The department is staffed by 70 fully trained firefighters and responds to an average of 600 calls per year.

The township of Lyndhurst runs both a volunteer and a paid ambulance service. Residents can use the Lyndhurst Police Emergency Squad for emergency services. The volunteers respond to medical calls from 6 pm to 6 am Monday through Friday and on a 24-hour basis on weekends, while the paid division is staffed from 6 am to 6 pm during the week. Residents do not pay for the services provided.

As of May 2010, the township had a total of 45.95 miles (73.95 km) of roadways, of which 37.81 miles (60.85 km) were maintained by the municipality, 4.93 miles (7.93 km) by Bergen County and 2.15 miles (3.46 km) by the New Jersey Department of Transportation and 1.06 miles (1.71 km) by the New Jersey Turnpike Authority.

Route 17 and County Route 507 pass through Lyndhurst. Route 3 is just over the northern border of Lyndhurst in neighboring Rutherford. Route 21 is across the Passaic River in neighboring Nutley and Clifton.

The New Jersey Turnpike Western Spur (Interstate 95) passes through the southeastern part, but the closest interchanges are in East Rutherford (Exit 16W) and Kearny (Exit 15W).

The Avondale-DeJessa Bridge, which connects Lyndhurst and Nutley over the Passaic River with one lane in each direction, carries more than 26,000 vehicles a day, and is among 22 bridges in Bergen County that have been classified as "structurally deficient".

NJ Transit has two train stations in Lyndhurst, located at Lyndhurst Station and Kingsland Station. Trains at both stations operate on the Main Line to Hoboken Terminal, with transfers available at Secaucus Junction to New York Penn Station, Newark Penn Station, and Newark Airport, with transfers at Hoboken to PATH trains, Hudson Bergen Light Rail, and New York Waterway ferries. The trains travel over the Lyndhurst Draw, a railroad bridge crossing the Passaic River between Clifton and Lyndhurst that was constructed in 1901 and is owned and operated by NJ Transit Rail Operations.

New Jersey Transit offers buses serving Newark on the 76 route and to the Port Authority Bus Terminal in Midtown Manhattan on the 109, 191, 192, 193 and 195 routes.

People who were born in, residents of, or otherwise closely associated with Lyndhurst include:

Lyndhurst is home to the following locations on the National Register of Historic Places:

• River Road School – 400 Riverside Avenue (added 1977)
• Jacob W. Van Winkle House – 316 Riverside Avenue (added 1983)
• Jeremiah J. Yeareance House – 410 Riverside Avenue (added 1986)

• Kukës, Albania

Lyndhurst has made several appearances on the hit TV series The Sopranos.

• Municipal Incorporations of the State of New Jersey (according to Counties) prepared by the Division of Local Government, Department of the Treasury (New Jersey); December 1, 1958.
• Clayton, W. Woodford; and Nelson, William. History of Bergen and Passaic Counties, New Jersey, with Biographical Sketches of Many of its Pioneers and Prominent Men. Philadelphia: Everts and Peck, 1882.
• Harvey, Cornelius Burnham (ed.), Genealogical History of Hudson and Bergen Counties, New Jersey. New York: New Jersey Genealogical Publishing Co., 1900.
• Van Valen, James M. History of Bergen County, New Jersey. New York: New Jersey Publishing and Engraving Co., 1900.
• Westervelt, Frances A. (Frances Augusta), 1858–1942, History of Bergen County, New Jersey, 1630–1923, Lewis Historical Publishing Company, 1923.

• Lyndhurst Township official website