Mental Health & Recovery Board of Union County Share: Mental Health ServicesAlcohol & Drug Treatment & Prevention Services Mental Health & Recovery Board of Union County Visit Website 131 N. Main St. Ste. A Marysville, OH 43040 (937) 642-1212 (937) 644-9543 (fax) www.mhrbuc.org Facebook Hours: 8am-4:30pm Monday - Friday About Map About Serve as the sole community alcohol, drug addiction and mental health planning and coordination body for Union County. Directions Corner of N. Main and 4th Street-Downtown Marysville, Oh 43040