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LEONARDTOWN, MD (June 11, 2026) – The St. Mary’s County Health Department (SMCHD) will be closed on Friday, June 19, 2026 for the Juneteenth holiday. This includes the main office in Leonardtown and all satellite offices. Normal operations will resume on Monday, June 22, 2026.
Learn more about SMCHD programs, services, and hours of operation at smchd.org/about/locations.
Mon – Fri: 8:00 am – 5:00 pm
Mon – Fri: 8:30 am – 4:00 pm
Mon & Thurs: 7:00 am – 2:00 pm
Tues, Wed, & Fri: 7:00 am – 4:30 pm
Need Assistance?
For general Health Department questions, please call our main office at 301-475-4330.
For measles-related questions, please contact our Measles Call Center Monday – Friday from 8:00 a.m. – 4:30 p.m. at 240-735-8288.
Health Care Providers: Please use the contact information listed on our Provider Resources page to report suspected or confirmed infectious diseases. Provider reporting should not be directed to the community call center.