While neither would class as an IPA, neither New Glarus' Moon Man and Ale Asylum's Hopalicious will disappoint you. Ale Asylum does make Ballistic, Satisfaction Jacksin, and Bedlam, but I haven't had the opportunity to try any of these yet.
If there's one within any sort of reasonable driving distance, find yourself a Woodman's grocery store. Very decent selection, and not just of cold beer.