Westlake is a city in Calcasieu Parish, Louisiana, United States and is part of the Lake Charles Metropolitan Statistical Area. It is considered a suburb of Lake Charles. The population was 4,668 at the 2000 census. Westlake was incorporated in 1945.
Westlake is located at 30°14′54″N 93°15′33″W / 30.24833°N 93.25917°W / 30.24833; -93.25917 (30.248455, -93.259047).
According to the United States Census Bureau, the city has a total area of 2.3 square miles , all of it land.