First Federal of Northern Michigan, Mio Branch Basic Info Reviews Routing Numbers Map & Direction Name: First Federal of Northern Michigan, Mio Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 308 N Morenci Street Mio, Michigan 48647 Oscoda County View other branches Phone: 989-826-3274 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer072414051YN272471085YY From: To: