Jacksonville Sheriff's Office | 6,861 followers on LinkedIn. “To Serve and Protect in Partnership with Our Community” | Located in Duval County, Florida, the Jacksonville Sheriff’s Office (JSO) is an accredited agency comprised of approximately 3,500 employees; including nearly 2,000 sworn police; corrections and civilian personnel. As one of the premier law enforcement agencies in the nation, JSO provides rigorous training, maintains the highest professional standards, and offers a technologically advanced academy to train top quality employees to serve and protect a community of nearly one-million citizens. Under the leadership of Sheriff T.K.