Maebashi is the capital city of Gunma Prefecture, Japan. The city was founded on April 1, 1892, by the samurai Makuba Kawai. On December 5, 2004 the town of go, and the villages of Kasukawa and Miyagi, all from Seta District, were merged into Maebashi. As of October, 2010, population data, the city has an estimated population of 344,871 and a population density of 1,106.63 persons per Square kilometer. The total area is 311.64 Square kilometers. It was traditionally the most populous city in Gunma until Takasaki merged with nearby towns.