Sheriff Simpson began his career with the Sheriff's Office as a Corrections Officer/Dispatcher in July, 1988. He served in that capacity until December, 1990 when he was promoted to Deputy Sheriff assigned to road patrol. In January, 1998, he was promoted to the rank of Captain by Sheriff Hayes, serving as a road patrol supervisor. On July 5, 2003, he was promoted to the rank of Chief Deputy, serving as second in command under Sheriff Hayes.
On December 3, 2003, he was appointed Sheriff of Preble County after the unexpected death of Sheriff Thomas Hayes. Sheriff Simpson was elected to his first full term as Sheriff in November, 2004. Sheriff Simpson is currently in his 33rd year of service with this office.
Sheriff Simpson has attended numerous law enforcement training classes throughout his career, including the Evidence Technician Course at the Miami Valley Regional Crime Lab, Technical Crash Investigations at the Ohio Highway Patrol Academy, and several management courses offered through the Ohio Peace Officer's Training Academy.
Sheriff Simpson is a graduate of the 141st Class of the Northwestern University School of Police Staff and Command in 2000, and the 217th Session of the FBI National Academy in Quantico, Virginia in 2004, and the National Sheriff's Institute in Longmont, Colorado in 2005. Simpson has maintained his Certified Law Enforcement Manager's certificate from the Buckeye State Sheriff's Association since 2004. He is also an active member of the Floyd E Spitler Lodge of the F.O.P., and a Rotarian with the Eaton Rotary Club. Sheriff Simpson is a Past President of the Buckeye State Sheriff's Association. He is a member of the National Sheriffs' Association. He also serves on several volunteer boards throughout the county.
Sheriff Simpson is a 1985 graduate of Eaton High School and the Montgomery County Joint Vocational School's Law Enforcement Program. He lives near Camden with his wife Dawna and daughter McKenna.