As of 2005, the district had an estimated population of 5,233 and a density of 15.37 persons per km<sup>2</sup>. The total area was 340.47 km<sup>2</sup>.
On January 1, 2006 - the town of Miyama, along with the towns of Hiyoshi, Sonobe and Yagi (all from Funai District), were merged to create the city of Nantan. Kitakuwada District was dissolved as a result of this merger.