San Diego County is located in the southwestern corner of the state of California, United States. As of the 2020 census, the population was around 3.3 million, making it California's second-most populous county and the fifth-most populous in the United States. Its county seat is San Diego, the eighth-most populous city in the United States.
The county is known for its warm and sunny weather, with a Mediterranean climate. It features miles of beautiful beaches along the Pacific coastline, as well as mountains and desert areas in the east.
It is home to more than 16 military facilities catering to the U.S Navy, Marines, and Coast Guard, making the defense industry a key factor in regional economics.
San Diego County also hosts numerous renowned institutions such as the University of California, San Diego (UCSD), San Diego State University (SDSU), and the San Diego Zoo. The economy is heavily influenced by sectors such as healthcare, biotechnology, international trade, and tourism.
The area is also rich in cultural diversity, with several annual events celebrating various cultures. The county is known for its Mexican food, craft beer, and wine industry, particularly in the area of Temecula Valley.
In addition, San Diego County has a number of national parks, nature reserves, and wildlife refuges, reflecting its commitment to environmental sustainability. It is undoubtedly a popular destination for tourists and nature enthusiasts alike.