The San Francisco Fire Department provides fire and emergency services to the City and County of San Francisco, California. The SFFD serves an estimated population of 1.2 million people (which includes the approximately 740,000 citizens residing in the square miles (km² ) of San Francisco, the daytime-commuter population, and the thousands of other visitors, tourists, and others present in the City every day) with approximately 1,700 firefighting and emergency medical field personnel.