Tri-County Health Department (TCHD) serves over 1.3 million people in Adams, Arapahoe and Douglas Counties, and offers over 60 programs/services ranging from birth certificates, immunizations and health care referrals to restaurant inspections and infectious disease investigations, from 11 offices in this 3,000 square mile area. The agency’s jurisdiction includes 26 municipalities and 3 unincorporated counties, 15 school districts with more than 360 public schools, 12 acute care hospitals, 3 Federally Qualified Healthcare Centers with multiple facilities, 3 community mental health service providers and one Regional Collaborative Care Organization (Colorado Access).
Tri-County District Health Department opened on January 1, 1948. Tri-County initially served the 160,000 residents of Adams, Arapahoe and Jefferson Counties. In 1958 Jefferson County separated from Tri-County to form its own local health department and on January 1, 1966 after the South Platte River Floods of 1965, Douglas County officially joined Tri-County District Health Department, creating the current jurisdictional structure.