Which U.S. state has the most active volcanoes?

Volcanoes are an underutilized tool of destruction in Hollywood movies. There are enough disaster movies that kick off with tsunamis, earthquakes, and asteroid strikes to last us until the ACTUAL apocalypse. A volcano disaster isn't that far-fetched either. Scientists say about 170 of them are active and spread throughout the United States. Which state houses the most volcanoes?