Hakone is a town in Kanagawa Prefecture, Japan. As of 1 October 2023, the town had a population of 10,965, and total area of 92.82 km². Ha…Hakone is a town in Kanagawa Prefecture, Japan. As of 1 October 2023, the town had a population of 10,965, and total area of 92.82 km². Hakone is a notable spa town and a popular tourist destination due to its many hot springs being within view of nearby Mount Fuji, the most visited mountain in Japan.