On November 3, 2005 Miyajima, along with the town of Ōno, also from Saeki District, was merged into the city of Hatsukaichi.
As of 2003, the town had an estimated population of 2,018 and a density of 66.40 persons per km². The total area was 30.39 km².
In August 2004, both Hatsukaichi and the city of Hiroshima expressed an interest in annexing the town. The people in Miyajima supported Hatsukaichi. A committee for discussing the merger was created as soon as possible and the town was amalgamated with the city of Hatsukaichi on November 3, 2005.
A torii(鳥居?, lit. bird perch, /ˈtɔəri.iː/) is a traditional Japanesegate most commonly found at the entrance of or within a Shinto shrine, where it symbolically marks the transition from the profane to the sacred (see Sacred-profane dichotomy). The presence of a torii at the entrance is usually the simplest way to identify Shinto shrines, and a small torii icon represents them on Japanese road maps. They are however a common sight at Japanese Buddhist temples too, where they stand at the entrance of the temple's own shrine, called chinjusha(鎮守社?, tutelary god shrine) and usually very small.