First Financial Bank, Gridley Branch Basic Info Reviews Routing Numbers Map & Direction Name: First Financial Bank, Gridley Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 325 Center Street Gridley, Illinois 61744 Mclean County View other branches Phone: 309-747-2100 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer071100858YN071103473YY074900356YY From: To: