With relatively few residents, Irwindale consists mostly of rock quarries, which are the major revenue source for the city. The Irwindale Event Center is also located in the city, as is the Santa Fe Dam Recreation Area near the San Gabriel River, a plant of the Miller Brewing Company, and a plant of the Huy Fong Foods sriracha sauce company.
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.