San Francisco Sheriff's Department
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![](/Images/godic/202502/10/Seal_of_the_San_Francisco_Sheriff's_Department4140.png")
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![The 1934 San Bruno jail, which served the City and County for over 70 years, until its closure in 2006](/Images/godic/202502/10/SFCountyJail4140.jpg")
The San Francisco Sheriff's Department (SFSD), officially the City and County of San Francisco Sheriff's Department, is the sheriff's department for the City and County of San Francisco. The department has 850 deputized personnel, and support staff.
The primary function of the SFSD is to operate the system of county jails where there is an average population of 2,200 inmates, and a number of individuals on supervised release programs.