Marina del Rey is an unincorporated seaside community in Los Angeles County, California, United States with a marina that is a major boating and water recreation destination of the Greater Los Angeles Area. The marina is North America's largest man-made small-craft harbor and is home to approximately 5,000 boats. The area is a popular tourism destination for water activities such as paddle board and kayak rentals, dining cruises, and yacht charters. This Westside locale is approximately 4 miles (6.4 km) south of Santa Monica, and 4 miles (6.4 km) north of Los Angeles International Airport.
The harbor is owned by Los Angeles County and is operated by the County's Department of Beaches and Harbors. The population was 8,866 at the 2010 census. For statistical purposes, the United States Census Bureau has defined Marina del Rey as a census-designated place (CDP). The census definition of the area may not precisely correspond to local understanding of the area with the same name. The Los Angeles Times said in a 1997 editorial that the harbor is "perhaps the county's most valuable resource".