Flagstar Bank, FSB, Grand Rapids/28th Street Basic Info Reviews Routing Numbers Map & Direction Name: Flagstar Bank, FSB, Grand Rapids/28th Street Main Office: No Service: Full Service Brick and Mortar Office Location: 3205 28th St Se Grand Rapids, Michigan 49512 Kent County View other branches Phone: 616-464-2469 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer272471399YN272471852YY From: To: