Westhaven is an unincorporated community in Fresno County, California. It is located 16 miles (26 km) south-southwest of Riverdale, at an elevation of 279 feet (85 m).
A post office operated at Westhaven from 1918 to 1958.
During World War II was the site of a training landing strip called Boston Field, part of Lemoore Army Air Field.
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