The Los Angeles Fire Department (LAFD or LA City Fire) provides emergency medical services, fire cause determination, fire prevention, fire suppression, hazardous materials mitigation, and technical rescue services to the city of Los Angeles, California, United States. The LAFD is responsible for approximately 4 million people who live in the agency's 471 square miles (1,220 km2) jurisdiction. The Los Angeles Fire Department was founded in 1886 and is one of the largest municipal fire departments in the United States, after the New York City Fire Department and the Chicago Fire Department. The department may be unofficially referred to as the Los Angeles City Fire Department or "LA City Fire" to distinguish it from the Los Angeles County Fire Department which serves the county and whose na