Facts about San Francisco County, California
San Francisco is the cultural, commercial, and financial center of Northern California. It covers an area of about 46.89 square miles (121.4 km²),mostly at the north end of the San Francisco Peninsula in the San Francisco Bay Area, making it the fifth most densely populated U.S. county, behind only four of the five New York City boroughs.
GeographySan Francisco is located on the West Coast of the United States at the north end of the San Francisco Peninsula and includes significant stretches of the Pacific Ocean and San Francisco Bay within its boundaries.
DemographicsThe U.S. Census Bureau estimates San Francisco's population to be 881,549 as of July 1, 2019, with a population density of 18,838/sq mi.
Serving San Francisco County, California

Bio-One services all types of trauma, distressed property, and biohazard scenes in communities throughout East Bay Area. We partner with local authorities, communities, emergency services personnel, victim services groups, hoarding task forces, apartment complexes, insurance companies and others to provide the most efficient and superior service possible.
We are your crime scene cleaners dedicated to assisting law enforcement, public service agencies and property owners/managers in restoring property that has been contaminated as a result of crime, disaster or misuse.
- We have fielded thousands of calls and recovered just about any situation out there in a professional and compassionate matter.
- We are Licensed, Bonded, and Insured.
- We maintain strict adherence to OSHA rules and regulations to ensure the safety of our workers, the public, and of you and your family.
- We are proud to have a great working relationship with the Police, Fire, and most Insurance Agencies.