San Francisco, CA

ZIP code 94120 is a unique area in San Francisco, California, known for being home to the historic Alcatraz Island. This iconic island housed a former federal prison and now serves as a popular tourist attraction. Visitors can explore the infamous prison, learn about its history, and enjoy stunning views of the San Francisco Bay. Additionally, the ZIP code is also home to the United States Penitentiary, San Francisco, a high-security federal prison.