2010 Census

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/km2). There were 8,787 housing units at an average density of 1,927.7 per square mile (744.3/km2). 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.

The Lyndhurst School District serves students in pre-kindergarten through twelfth grade. As of the 2018–19 school year, the district, comprised of eight schools, had an enrollment of 2,525 students and 190.5 classroom teachers (on an FTE basis), for a student–teacher ratio of 13.3:1. Schools in the district (with 2018–19 enrollment data from the National Center for Education Statistics) are Columbus School with 156 students in grades K–2, Franklin School with 242 students in grades Pre-K–2, Washington School with 186 students in grades Pre-K–2, Memorial Campus with 202 students in grade 3, Jefferson School with 272 students in grades 4–8, Lincoln School with 251 students in grades 4–8, Roosevelt School with 418 students in grades 4–8 and Lyndhurst High School with 752 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.

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.

Police
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.

Fire
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.

Ambulance
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.

Roads and highways
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”.

Public transportation

The Lyndhurst Draw crosses the Passaic River carrying the NJT Main Line and Metro North Port Jervis Line.

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 191, 192, 193 and 195 routes. Lyndhurst is also served by DeCamp Bus Lines routes 32, 44 and 99.