The San Gabriel Valley region includes the cities of Alhambra, Altadena, Arcadia, Baldwin Park, Covina, Diamond Bar, Duarte, East Los Angeles, El Monte, Industry, Irwindale, La Canada Flintridge, La Puente, Monrovia, Montebello, Monterey Park, Pasadena, Pomona, Rosemead, San Gabriel, San Marino, Sierra Madre, South El Monte, South Pasadena, Temple City, Walnut, West Covina and some unincorporated areas of Northeast Los Angeles County.
