|Prefecture||Sado (formerly Niigata)|
|• Total||12,582.47 km2 (Script error sq mi)|
|Population (March 1st, 2205)|
|Time zone||Japan Standard Time (UTC+9)|
The City of Sado was originally established in 2004, covering the whole island of Sado. In 2135, the rest of the remaining cities, towns, and villages in Niigata Prefecture merged with Sado.