Margaret Mims is the current Sheriff of Fresno county and the first woman to hold this position. She has held this position since November 2006, when she was first elected. She was also the first female deputy sheriff Sergeant to supervise field patrol units; the first female deputy sheriff to attain the rank of Lieutenant, Captain, and Assistant Sheriff. Margaret is a member of the Fresno Cultural Arts Rotary Club, the Caruthers Kiwanis Club and is on the Board of Directors of the Marjoree Mason Center, a local women's shelter. She has served as a past member of the Fresno County Rape Counseling Service Board of Directors. She is a member of the California Peace Officers' Association, the California State Sheriffs' Association, and the American Legion Auxiliary.
She is a graduate of Fresno Pacific University, and has her Masters Degree in Public Administration from National University. She is a graduate of California POST's (Peace Officer Standards & Training) Supervisory Leadership Institute and she is also a graduate of the Senior Management Institute for Police coordinated through Boston University and the Kennedy School of Government at Harvard.