The San Mateo County Sheriff's Homeland Security Division works daily around the clock by air, land and sea to prepare and protect our residents from a range of threats. These threats include terrorism, natural disasters, hazardous materials, global disease outbreaks and other emergencies. These operations are carried out 24/7 through the Area Office of Emergency Services and the Emergency Services Bureau.

For the most current San Mateo County information on COVID-19 Click Here