When talking to someone in the hop industry, it is not uncommon for the Pacific Northwest (Washington, Oregon, and Idaho), to be referred to as the traditional growing region. However, digging a little deeper into the history of hop growing in the US, an even more traditional hop-growing region is unearthed: the Atlantic Northeast.
Without too much of a history lesson, essentially, as the thirst for fresh beer, hops, and American patriotism grew stronger in the mid 1600s, hops were grown commercially in the Massachusetts Bay Colony region, and then later in New York.
For the full story, go here: http://ychhops.com/connect/news/blog/hop-growing-across-america