Florham Park was incorporated as a borough by an Act of the New Jersey Legislature on March 9, 1899, from portions of Chatham Township.
Florham Park is the home to the New York Jets training camp, where in 2008 the Jets relocated to from their old facility at Hofstra University in Hempstead, New York. Florham Park beat out Berkeley Heights, Jersey City, Millburn, South Amboy, and Wood-Ridge, which had all been finalists contending to be the host of the new facility.
Florham Park is also the North American headquarters for the BASF corporation, the world's largest chemical company.
As of the census of 2000, there were 8,857 people, 3,239 households, and 2,474 families residing in the borough. The population density was 1,191.3 people per square mile (460.3/km²). There were 3,342 housing units at an average density of 449.5/sq mi (173.7/km²). The racial makeup of the borough was 94.00% White, 0.99% African American, 0.01% Native American, 3.87% Asian, 0.06% Pacific Islander, 0.38% from other races, and 0.68% from two or more races. Hispanic or Latino of any race were 2.15% of the population.
There were 3,239 households out of which 30.8% had children under the age of 18 living with them, 66.7% were married couples living together, 7.3% had a female householder with no husband present, and 23.6% were non-families. 20.7% of all households were made up of individuals and 10.0% had someone living alone who was 65 years of age or older. The average household size was 2.62 and the average family size was 3.05.
In the borough the population was spread out with 21.7% under the age of 18, 5.0% from 18 to 24, 25.2% from 25 to 44, 27.7% from 45 to 64, and 20.4% who were 65 years of age or older. The median age was 44 years. For every 100 females there were 86.0 males. For every 100 females age 18 and over, there were 80.6 males.
The median income for a household in the borough was $88,706, and the median income for a family was $102,047. Males had a median income of $74,410 versus $49,551 for females. The per capita income for the borough was $42,133. About 2.4% of families and 5.8% of the population were below the poverty line, including 3.8% of those under age 18 and 11.9% of those age 65 or over.