Most sparsely populated mountainous districts are part of the Fuji-Hakone-Izu National Park.
The majority area of the city of Odawara was formerly part of Ashigarashimo District.
Following disasters caused by eruptions of nearby Mount Fuji, a portion also came to be held as tenryō territory administered by the Tokugawa shogunate.
In 1889, it was administratively divided into two towns (Odawara and Hakone) and 30 villages.
Local voters rejected a planned merger of Yugawara into Odawara in 2005 in an August 8, 2004 referendum.