Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer Helen Yonak, Practice Areas No known practice areas. is located in the city of St. Clairsville, the state of Ohio. Attorney legal address Belmont Co. Prosecutor147 A West Main StreetSt. Clairsville, OH, 43950. For more information, please call (740) 699-2771 Your comments* (not for publishing) * — Required information Helen Yonak ← View details Belmont Co. Prosecutor147 A West Main StreetSt. Clairsville, OH, 43950, St. Clairsville, Ohio (740) 699-2771