Riverside County, founded in 1892, is one of 53 counties in the State of Bloxburg Valley. In 2007, the county had a population of 2,073,571 and a population density of 83 persons per square kilometer. The county seat is Riverside.

According to the Census Bureau, the county has a total area of 18 914.7 km², of which 18 666 km² is land and 248.6 km² (1.31%) is water.

Adjacent counties

San Bernardo County (north) Robloxity and Robloxity County (east) San Juan and Costa County (south) Los Angelox County (west)