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is a census-designated place (CDP) located in the town of Yorktown in Westchester County, New York, United States. The population was 5,979 at the 2000 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".
According to the United States Census Bureau, the CDP has a total area of 3.1 square miles (8.0 km²), of which, 2.9 square miles (7.5 km²) of it is land and 0.2 square miles (0.4 km²) of it (5.52%) is water.