Glendale is a city in the Verdugo Mountains region of Los Angeles County, California. As of the 2010 census it had a population of 191,719, and in 2019 the population was estimated at 204,765, making it the fourth-largest city in Los Angeles County and the 23rd-largest city in California. It is located about 10 miles (16 km) north of downtown Los Angeles.

Glendale lies in the Verdugo Mountains, and is a suburb in the Los Angeles metropolitan area. The city is bordered to the northwest by the Sun Valley and Tujunga neighborhoods of Los Angeles; to the northeast by La Cañada Flintridge and the unincorporated area of La Crescenta; to the west by Burbank and Griffith Park; to the east by Eagle Rock and Pasadena; to the south by the Atwater Village neighborhood of Los Angeles; and to the southeast by Glassell Park neighborhood of Los Angeles. The Golden State, Ventura, Glendale, and Foothill freeways run through the city.