The Bar Towel

(Courtesy of NYT Magazine, underlying data source uncredited).

Here's a rank-ordered list of states whose annual consumption exceeds 21 gallons per-person:

New Hampshire 31.9
North Dakota: 30.6
Montana: 29.8
South Dakota: 26.9
Wisconsin: 26.2
Nevada: 26.2
Vermont: 25.9
Maine: 25.4
Delaware: 25.0

A couple of comments:

1. I bet Nevada makes that list on account of tourism impacting the numerator without impacting the denominator

2. Where is Oregon???