The Southern District of California is a federal judicial district located in the southern part of the state of California. It encompasses several counties, including San Diego, Imperial, and parts of Riverside. Established in 1850, this district handles a variety of cases, including civil, criminal, and bankruptcy matters. The district's main courthouse is situated in San Diego, which serves as the hub for legal proceedings. It is known for its diverse population and significant border issues, given its proximity to Mexico. The Southern District plays a crucial role in the federal judicial system, addressing cases that impact both local and national interests.