Lake Mohegan, commonly known as Mohegan Lake,[1][2][3][4] is a census-designated place (CDP) located in the Town of Cortlandt and partially in the Town of Yorktown, both in Westchester County, New York. Mohegan Lake was named "Lake Mohegan" in 1859 by William Jones, who owned the Mount Pleasant Hotel on the East side of the lake.[5] The change dates back to the early 1970s before which residents commonly referred to it as "Lake Mohegan", the name still used by the United States Census Bureau for the CDP.[6] The population in the 2010 Census was 6,010.