what county is riverside
Riverside, California. 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. It is the most populous city in the Inland Empire and in Riverside County, and is located about 60 miles (97 km) east of Los Angeles. It is also part of the Greater Los Angeles area.