The office is responsible for the prosecution of both felony and misdemeanor violations of California state law that occur within the jurisdiction of the county.

The current district attorney is Summer Stephan, who replaced Bonnie Dumanis on an interim basis after the latter resigned in July 2017.

All other misdemeanor, felony, and infraction violations that occur within San Diego County are prosecuted by the district attorney.

In the first 20 years of San Diego County there were 23 men that held the office of district attorney, the first being William C.

[3] The San Diego District Attorney currently maintains a law enforcement arm called Bureau of Investigation.