Plandome Heights is a village in Nassau County, New York in the United States. The population was 1,005 at the 2010 census.
According to the United States Census Bureau, the village has a total area of 0.2 square miles (0.52 km), of which, 0.2 square miles (0.52 km) of it is land and 5.26% is water.
As of the census of 2000, there were 971 people, 324 households, and 268 families residing in the village. The population density was 5,350.6 people per square mile (2,082.8/km²). There were 328 housing units at an average density of 1,807.4 per square mile (703.6/km²). The racial makeup of the village was 92.28% White, 0.31% African American, 0.10% Native American, 6.80% Asian, 0.10% Pacific Islander, 0.10% from other races, and 0.31% from two or more races. Hispanic or Latino of any race were 3.09% of the population.
There were 324 households out of which 42.0% had children under the age of 18 living with them, 72.8% were married couples living together, 7.1% had a female householder with no husband present, and 17.0% were non-families. 15.1% of all households were made up of individuals and 11.4% had someone living alone who was 65 years of age or older. The average household size was 3.00 and the average family size was 3.33.
In the village, the population was spread out with 28.6% under the age of 18, 5.0% from 18 to 24, 24.6% from 25 to 44, 27.8% from 45 to 64, and 13.9% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 91.9 males. For every 100 females age 18 and over, there were 86.8 males.
The median income for a household in the village was $123,199, and the median income for a family was $142,088. Males had a median income of $100,000 versus $46,000 for females. The per capita income for the village was $57,050. About 0.7% of families and 1.5% of the population were below the poverty line, including none of those under age 18 and 5.0% of those age 65 or over.