Bank of New Hampshire, Antrim Branch Basic Info Reviews Routing Numbers Map & Direction Name: Bank of New Hampshire, Antrim Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 77 Main Street Antrim, New Hampshire 03440 Hillsborough County View other branches Phone: 603-588-6333 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer011701903YN211770271YY From: To: