Jefferson County Health Department is the Local Public Health Agency serving Jefferson County, MO since 1949. JCHD empowers you to take charge of your health with the support of our experienced professional staff. Our accredited programs improve the health of our communities, one personalized service at a time. 3 Locations to serve you: 1818 Lonedell Rd., Arnold, MO 63010 405 Main St., Hillsboro, MO 63050 5684 Missouri PP, High Ridge, MO 63049 Call any of our locations at 314-797-3737