Saitama Prefecture is bordered by Tokyo, Chiba, Ibaraki, Tochigi, Gunma, Nagano, and Yamanashi.
On April 1, 2005, the town of Yoshida and the villages of Arakawa and Otaki (all from Chichibu District) and the old city of Chichibu merged to form the new city of Chichibu.
On October 1, 2005, the town of Showa from KitakatsushikaDistrict and the old city of Kasukabe merged to form the new city of Kasukabe.
On April 12005, the town of Yoshida and the villages of Arakawa and Otaki (all from Chichibu District) and the old city of Chichibu merged to form the new city of Chichibu.
On October 12005, the town of Showa from KitakatsushikaDistrict and the old city of Kasukabe merged to form the new city of Kasukabe.
On October 12005, the towns of Osato and Menuma from Osato District and the old city of Kumagaya merged to form the new city of Kumagaya.