Closter (pronounced KLO-ster) is a Borough in Bergen County, New Jersey, United States. As of the United States 2000 Census, the borough population was 8,383.

Closter, settled in 1704, was formed by an Act of the New Jersey Legislature on January 1, 1904, from portions of Harrington Township. On March 29, 1904, Harrington Park was created from portions of Closter, Harrington Township and Washington Township.

According to the United States Census Bureau, the borough has a total area of 3.3 square miles (8.5 km2), of which, 3.2 square miles (8.2 km2) of it is land and 0.1 square miles (0.3 km2) of it (3.65%) is water.

As of the census of 2000, there were 8,383 people, 2,789 households, and 2,320 families residing in the borough. The population density was 2,644.3 people per square mile (1,021.0/km2). There were 2,865 housing units at an average density of 903.7/sq mi (349.0/km2). The racial makeup of the borough was 75.32% White, 0.93% African American, 0.10% Native American, 21.56% Asian, 0.81% from other races, and 1.29% from two or more races. Hispanic or Latino of any race were 4.09% of the population.

As of the 2000 census, 12.75% of Closter's residents identified themselves as being of Korean ancestry, which was the seventh highest in the United States and fifth highest of any municipality in New Jersey, for all places with 1,000 or more residents identifying their ancestry.

There were 2,789 households out of which 43.3% had children under the age of 18 living with them, 72.9% were married couples living together, 8.0% had a female householder with no husband present, and 16.8% were non-families. 14.0% 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 2.98 and the average family size was 3.30.

In the borough the population was spread out with 28.0% under the age of 18, 4.8% from 18 to 24, 28.1% from 25 to 44, 26.0% from 45 to 64, and 13.1% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 97.1 males. For every 100 females age 18 and over, there were 91.0 males.

The median income for a household in the borough was $83,918, and the median income for a family was $94,543. Males had a median income of $65,848 versus $39,125 for females. The per capita income for the borough was $37,065. About 1.7% of families and 2.7% of the population were below the poverty line, including 3.0% of those under age 18 and 1.8% of those age 65 or over.

There are a number of exterminators, extermination services, extermination companies, pest control services, and pest removal services in Closter, NJ, to deal with bugs and insect infestation and other pest problems. When it comes to pest control and animal control services in Closter, New Jersey, you don't need to look any further than Del's Pest Arrest.