On March 20, 2006 the town of Utanobori merged into the town of Esashi.
Esashi District, Hokkaido Wikipedia
Esashi (枝幸郡, Esashi-gun) is a district located in Sōya Subprefecture, Hokkaido, Japan.
As of 2004, the district has an estimated population of 16,986 and a density of 8.87 persons per km². The total area is 1,915.76 square kilometres (739.68 sq mi).