Lake Mohegan is a census-designated place (CDP) located in the town of Yorktown and partially in the Town of Cortlandt, both in Westchester County, New York, United States. The population was 6,010 at the 2010 census. Locally, the area is known as Mohegan Lake, and the term “Lake Mohegan” is rarely used. However, this change dates back only to the early 1970s. Before then, local residents commonly referred to it as “Lake Mohegan”.
As of the census of 2000, there were 5,979 people, 1,975 households, and 1,520 families residing in the CDP. The population density was 2,058.4 per square mile (796.0/km²). There were 2,052 housing units at an average density of 706.5/sq mi (273.2/km²). The racial makeup of the CDP was 84.75% White, 6.89% African American, 0.33% Native American, 2.91% Asian, 0.02% Pacific Islander, 2.78% from other races, and 2.32% from two or more races. Hispanic or Latino of any race were 9.70% of the population.
There were 1,975 households out of which 43.1% had children under the age of 18 living with them, 65.2% were married couples living together, 9.0% had a female householder with no husband present, and 23.0% were non-families. 18.9% of all households were made up of individuals and 4.7% had someone living alone who was 65 years of age or older. The average household size was 2.83 and the average family size was 3.26.
In the CDP the population was spread out with 28.8% under the age of 18, 7.6% from 18 to 24, 32.7% from 25 to 44, 22.1% from 45 to 64, and 8.8% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 99.8 males. For every 100 females age 18 and over, there were 95.2 males.
The median income for a household in the CDP was $80,719, and the median income for a family was $88,903. Males had a median income of $59,219 versus $39,648 for females. The per capita income for the CDP was $29,945. About 3.5% of families and 4.1% of the population were below the poverty line, including 7.2% of those under age 18 and none of those age 65 or over.