Ashtabula County Court of Common Pleas - Juvenile Division » Directory View All A B C D E F G H I J K L M N O P R S T V W Michael A Hiener Ashtabula County Court of Common Pleas – Juvenile Division 4717 Main Avenue Ashtabula Ohio 44004 postal Phone: 440-994-6000work Email: mahiener@ashtabulacounty.usINTERNET Categories: Magistrate