Today the Riverside County Sheriff's Department is responsible for 7,303 square miles, spreading almost 200 miles in length, and embracing approximately 50 miles in width. This territory constitutes the fourth largest county in the state of California and is roughly the size of the state of New Jersey in total area. Vast changes have occurred in Riverside County since its inception. The population, having increased from 13,745 in 1893 to more than 2,189,641 in 2010, ranks it fourth in population among California's counties behind Los Angeles, Orange, and San Diego Counties respectively. Expanding to keep up with the county's explosive growth, the Riverside County Sheriff's Department is now the second-largest sheriff's department and third-largest police agency in California, with a staff of over 3,600.