East Whittier is an unincorporated community in Los Angeles County, California, United States. The population was 10,394 at the 2020 census, up from 9,757 at the 2010 census. For statistical purposes, the United States Census Bureau has defined this community as a census-designated place (CDP). The name was changed from East La Mirada in 2012, likely due to its precise location in relation to the city of Whittier.