Mark Willis

Julian “Mark” Willis, county administrator, holds a B.S. degree in Psychology from the University of Florida; he was appointed county administrator in 2020 after serving as the director of Planning & Zoning from 2016 to 2019. He previously served as the deputy director of Public Works, where he oversaw the Solid Waste and Water & Sewer enterprise fund programs, the Highway Maintenance division and served as the county’s first Fleet Maintenance and Management division chief between 2000 and 2016. Willis previously served in the U.S. Marine Corps for more than 21 years where he served in various combat units as a Marine Corps drill instructor at Parris Island, South Carolina; as an instructor at the U.S. Merchant Marine Academy at Kings Point, New York; as the air delivery platoon commander at Camp Lejeune, North Carolina; and with Manpower Management at U.S. Marine Corps Headquarters. He graduated with honors from the Army Combined Logistics Advanced Officers course, Army War College in Fort Lee, Virginia, and is a distinguished honor graduate from the U.S. Army Ranger and Airborne schools, and the U.S. Army Rigger school. Willis has served on various community boards including the Calvert County Historical Society, Jefferson Patterson Park & Museum, Relay for Life, Distinguished Young Women and as president of his homeowners’ association. He is a 2014 graduate of Leadership Maryland and is a 2021 graduate of Academy for Excellence in Local Governance at the University of Maryland School of Public Policy.