UNICO Bank, Harrisburg Branch Basic Info Reviews Routing Numbers Map & Direction Name: UNICO Bank, Harrisburg Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 1100 North Illinois Harrisburg, Arkansas 72432 Poinsett County View other branches Phone: 870-578-2464 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer081910436YY284174134YN From: To: