ASHTABULA COUNTY HEALTH DEPT 12 W JEFFERSON ST JEFFERSON OH 44047 (440) 576-6010 HOURS: Monday - Friday 8:00 am - 4:30 pm Special Hours for Seniors Only: Tuesday and Thursday 8:00-10:00 a.m. Call for Appointment CLOSED ALL LEGAL HOLIDAYS - Click here to see all Holidays for this year..