2020 census

The 2020 United States census counted 2201 residents living in Long Valley. In the CDP there is an estimated 752 houses with 603 buildings occupied by owners. The racial makeup was 93.3% (2,054) White, 3.9% (85) Black or African American, 2% (44) Native American, 9.1% (200) Asian, 0.00% (0) Pacific Islander, 8% (8) from other races, and 6.6% (146) from two or more races. Hispanic or Latino of any race were 15.3% (337) of the population.^[20]

In Long Valley, the median age is 38.2 years old. About 12.5% (275) of the population is under the age of five, 67.2% (1,479) is between the ages of 18 and 64 and 11.4% (447) of the population are 65 or older.^[21] 50.5% of the population was male, 49.5% of the population is female.^[20]

The median income for a household in Long Valley is $104,722. The median income for males in Long Valley is $96,369, while the median income for females is $80,417.^[21]

Of the population, 21.1% have some form of a high school degree, 17.4% have some college but no degree, 9.5% have an associate's degree, 26% have a bachelor's degree and 20.9% have a graduate or professional degree.^[21]

2010 census

The 2010 United States census counted 1,879 people, 675 households, and 534 families in the CDP. The population density was 411.5 per square mile (158.9/km²). There were 709 housing units at an average density of 155.3 per square mile (60.0/km²). The racial makeup was 94.73% (1,780) White, 0.53% (10) Black or African American, 0.00% (0) Native American, 1.81% (34) Asian, 0.00% (0) Pacific Islander, 1.33% (25) from other races, and 1.60% (30) from two or more races. Hispanic or Latino of any race were 5.32% (100) of the population.^[14]

Of the 675 households, 37.0% had children under the age of 18; 65.8% were married couples living together; 9.5% had a female householder with no husband present and 20.9% were non-families. Of all households, 15.6% were made up of individuals and 6.1% had someone living alone who was 65 years of age or older. The average household size was 2.77 and the average family size was 3.10.^[14]

25.8% of the population were under the age of 18, 5.9% from 18 to 24, 21.0% from 25 to 44, 34.0% from 45 to 64, and 13.4% who were 65 years of age or older. The median age was 43.8 years. For every 100 females, the population had 97.2 males. For every 100 females ages 18 and older there were 96.5 males.^[14]

2000 census

As of the 2000 United States census^[5] there were 1,818 people, 654 households, and 502 families residing in the CDP. The population density was 148.7/km² (385.4/mi²). There were 674 housing units at an average density of 55.1/km² (142.9/mi²). The racial makeup of the CDP was 97.36% White, 0.66% African American, 0.22% Native American, 0.94% Asian, 0.28% from other races, and 0.55% from two or more races. Hispanic or Latino of any race were 1.27% of the population.^[19]

There were 654 households, out of which 36.9% had children under the age of 18 living with them, 67.0% were married couples living together, 7.5% had a female householder with no husband present, and 23.1% were non-families. 16.7% of all households were made up of individuals, and 4.0% had someone living alone who was 65 years of age or older. The average household size was 2.75 and the average family size was 3.15.^[19]

In the CDP the population was spread out, with 25.3% under the age of 18, 5.1% from 18 to 24, 33.3% from 25 to 44, 27.3% from 45 to 64, and 8.9% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 101.6 males. For every 100 females age 18 and over, there were 98.8 males.^[19]

The median income for a household was $97,763, and the median income for a family was $104,926. Males had a median income of $76,791 versus $41,759 for females. The per capita income was $37,489. About 1.8% of families and 2.3% of the population were below the poverty line, including 2.0% of those under age 18 and 4.0% of those age 65 or over.^[19]