Agency Johnson County Sheriff’s Office Agency Details Address: P.O. Box 39301 Porter Industrial Rd, Clarksville, AR 72830Phone: 501-754-2200Agency Type: SheriffNumber of Officers: 12Population Served: 22781Specialized Units: Search and rescueFacebook URL: http://www.facebook.com/pages/johnson-county-sheriffs-office-arkansas/153523500150?v=wall