Irwindale is a city in the San Gabriel Valley, in Los Angeles County, California, United States. The population was 1,422 at the 2010 census, down from 1,446 at the 2000 census.
With relatively few residents, Irwindale consists mostly of rock quarries, which are the major revenue source for the city. The Irwindale Speedway is also located in the city, as is the Santa Fe Dam Recreation Area near the San Gabriel River, and a plant of the Miller Brewing Company. The city became the new permanent site for the annual Southern California Renaissance Pleasure Faire in 2005, after it moved from its previous home at the Glen Helen Regional Park in Devore.
Unlike the fellow low population cities Industry and Vernon, there are actual neighborhoods in Irwindale. Irwindale is a full service city, offering police and library services. There is a skate park, a teen center, a senior center, and a public gymnasium. The housing is centered near the southeast corner of Arrow Highway and Irwindale Avenue, with a small tract of housing in the southwest corner of the city near Cypress Avenue.