On March 23, 2010, all three towns merged with the
city of Kazo to newly create the city of Kazo and the district dissolved. As a result, it was the first district to dissolve within Saitama Prefecture since the districts were reorganized in 1896.
Timeline
January 1, 1971 - The village of Ōtone becomes the town of Ōtone.(2 towns, 3 village)
April 1, 1971 - The village of Kitakawabe becomes the town of Kitakawabe.(3 towns, 2 village)
May 1, 2001 - The village of Kawasato becomes the town of Kawasato.[1] (4 towns, 1 village)
March 23, 2010 - The towns of Kisai, Kitakawabe, and Ōtone merged with the city of Kazo to newly form the city of Kazo. Kita-Saitama District was dissolved the same day.[1]