Shirasawa, GunmaShirasawa was a village located in Tone District, Gunma Prefecture, Japan.PopulationAs of 2003, the village had an estimated population of 3,736 and a density of 132.67 persons per km2. The total area was 28.16 km2.HistoryOn February 13, 2005, Shirasawa, along with the village of Tone, was merged into the expanded city of Numata.