The City of South San Francisco proudly remains The Industrial City, a reflection of its steel mill and ship building past, redefined to reflect the innovative, entrepreneurial, and industrious spirit which has made South San Francisco the Biotech Capital of the World, with more than 250 active biotech companies and growing. A vibrant community of 64,601 residents, South San Francisco enjoys a high quality of life with an extensive public parks system, active library and learning programming and a dynamic, engaged community making South San Francisco a great place to live, learn, work, and play.