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Holbrook, New York
Hamlet and census-designated place
U.S. Census map
U.S. Census map
Country United States
State New York
County Suffolk
 • Total 7.2 sq mi (18.6 km2)
 • Land 7.2 sq mi (18.6 km2)
 • Water 0 sq mi (0.0 km2)
Elevation 118 ft (36 m)
Population (2010)
 • Total 27,195
 • Density 3,787/sq mi (1,462/km2)
Time zone Eastern (EST) (UTC-5)
 • Summer (DST) EDT (UTC-4)
ZIP code 11741
Area code(s) 631
FIPS code 36-35056
GNIS feature ID 0952975

Holbrook is a hamlet and census-designated place (CDP) in Suffolk County, New York, United States. The population was 27,195 at the 2010 census. The community borders on the east side of Long Island MacArthur Airport.


Holbrook is believed to have gotten its name from a stream which was called in various tellings as either "Old Brook" or "Hollow Brook."

The area was part of the 51,000 acre Islip Grange estate acquired in 1697 by William Nicoll (son Matthias Nicoll who was the 6th mayor of New York City). It was largely a rural area until Alexander McCotter acquired 5,000 acres in the area in 1848 (after the Long Island Rail Road reached it in 1844) and plotted the community. The oldest still standing building from this period is St. John’s Lutheran Church which was built in 1863. In 1875 the Nevins and Griswold cigar factory operated at the original LIRR station.

In 1931 the population was 321. Population increased from 2,500 in 1965 to 15,000 in 1975 to after the Long Island Expressway reached the community in 1969. It also was the center of growth as Long Island McArthur Airport developed along the community's western border.


Holbrook is located at 40°47′59″N 73°4′32″W / 40.79972°N 73.07556°W / 40.79972; -73.07556 (40.799650, -73.075617).

According to the United States Census Bureau, the CDP has a total area of 7.2 square miles (18.6 km2), all land.

Demographics of the CDP

As of the census of 2000, there were 27,512 people, 9,019 households, and 7,350 families residing in the CDP. The population density was 4,032.5 per square mile (1,557.5/km²). There were 9,157 housing units at an average density of 1,342.2/sq mi (518.4/km²). The racial makeup of the CDP was 89.1% White, 1.32% African American, 0.08% Native American, 2.87% Asian, 0.04% Pacific Islander, 0.69% from other races, and 1.05% from two or more races. Hispanic or Latino of any race were 5.9% of the population.

There were 9,019 households out of which 39.1% had children under the age of 18 living with them, 68.8% were married couples living together, 9.5% had a female householder with no husband present, and 18.5% were non-families. 14.3% of all households were made up of individuals and 3.9% had someone living alone who was 65 years of age or older. The average household size was 3.04 and the average family size was 3.38.

In the CDP, the population was spread out with 25.7% under the age of 18, 8.0% from 18 to 24, 32.5% from 25 to 44, 26.2% from 45 to 64, and 7.5% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 94.6 males. For every 100 females age 18 and over, there were 91.8 males.

The median income for a household in the CDP was $72,801, and the median income for a family was $76,349 (these figures had risen to $96,530 and $101,336 respectively as of a 2007 estimate). Males had a median income of $50,040 versus $33,651 for females. The per capita income for the CDP was $26,863. About 2.5% of families and 3.3% of the population were below the poverty line, including 3.6% of those under age 18 and 3.8% of those age 65 or over.



Roads that pass through Holbrook include:

  • I-495, or Long Island Expressway. Access from Exit 61.
  • NY 454, known as Suffolk County Veterans' Memorial Highway
  • NY 27, known as Sunrise POW/MIA Highway, forming the southern border of the CDP. Access from Exit 50 eastbound, exit 51 westbound.
  • CR-19, known as Patchogue-Holbrook Road
  • CR-18, known as Broadway Avenue (unsigned)
  • CR-19A, known as Main Street (unsigned)
  • CR-97, known as Nicolls Road, forming part of the eastern border of the CDP
  • CR-16, known as Portion Road, forming the northern border of the CDP
  • Lincoln Avenue, near the western border of the CDP


  • Long Island MacArthur Airport is about 3 miles (5 km) from Holbrook.


Bus service in Holbrook is provided by Suffolk County Transit.


Holbrook is accessible on the Ronkonkoma Branch of the Long Island Rail Road. The Holbrook station closed in 1962, so the nearest access to the line is at the Ronkonkoma station or Medford station.

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