Bank Iowa, Bank Iowa Humboldt Branch Basic Info Reviews Routing Numbers Map & Direction Name: Bank Iowa, Bank Iowa Humboldt Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 506 Sumner Avenue Humboldt, Iowa 50548 Humboldt County View other branches Phone: 515-332-1451 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer073901864YN073902245YN073907583YN073919283YN073920285YY073920418YY073920861YN073921802YN073922241YN From: To: