Moreno Valley is a city located in Riverside County, California and is part of the San Bernardino-Riverside Metropolitan Area. A relatively young city, its rapid growth from the 1980s to the early 2000s made it the second-largest city in Riverside County by population, and one of the Inland Empire's population centers. As of the 2010 census, the city's population was 193,365. Neighboring Riverside, California, the county seat and largest city in the county, the two cities are closely tied. Moreno Valley is also part of the Greater Los Angeles area.