Palmdale, California is 66% larger than Riverside, California.
Area: 346 km2 calculated
Palmdale is a city located in the center of northern Los Angeles County, California, United States. Palmdale was the first community within the Antelope Valley to incorporate as a city on August 24, 1962; 47 years later, in November 2009, voters approved creating a charter city. Wikipedia
Area: 208 km2 calculated
Riverside is a city in Riverside County, California, United States, located in the Inland Empire metropolitan area. Riverside is the county seat of the eponymous county and named for its location beside the Santa Ana River. Wikipedia