Shibukawa is a city in Gunma Prefecture, Japan. As of 31 August 2020, the city had an estimated population of 76,098 in 32,439 households, and a population density of 320 inhabitants per square kilometre (830/sq mi). The total area of the city is 240.27 square kilometres (92.77 sq mi). Shibukawa is the location of Ikaho Onsen, a popular hot spring resort.