Public Health – Seattle & King County is among the largest metropolitan health departments in the country, providing effective and innovative health and disease prevention services that achieve and sustain safer and healthier communities for over 1.8 million residents and visitors of King County . Answering the needs of an increasingly diverse population, Public Health - Seattle & King County touches people's lives every day through health promotion and prevention activities, disease surveillance, health care, outreach and referral services, environmental health services, emergency medical care, jail health services, and readiness and response to public health emergencies.