Sado, Niigata

Coordinates: 38°01′06″N138°22′06″E / 38.01833°N 138.36833°E / 38.01833; 138.36833CountryJapanIslandHonshuRegionChūbuPrefectureNiigata PrefectureAs city of RyōtsuNovember 3, 1954Town merger and new nameMarch 1, 2004Government • MayorRyugo Watanabe (since April 2020)Area855.69 km (330.38 sq mi)Population48,195 • Density56.323/km (145.88/sq mi)Time zoneUTC+9 (Japan Standard Time)Address232 Chigusa, Sado-shi, Niigata-kenClimateCfaWebsitewww.city.sado.niigata.jpSymbolsFlowerDaylilyTreeThujopsis

Sado (佐渡市, Sado-shi; Japanese pronunciation:) is a city located on Sado Island (佐渡島, Sado(ga)shima) in Niigata Prefecture, Japan. Since 2004, the city has comprised the entire island, although not all of its total area is urbanized. Sado is the sixth largest island of Japan in area following the four main islands and Okinawa Island (excluding the Northern Territories). As of June 1, 2023, the city has an estimated population of 48,195 and a population density of 56.3 inhabitants per square kilometre (146/sq mi). The total area is 855.69 square kilometres (330.38 sq mi).