On April 1, 2005 - the towns of Kujū, Naoiri and Ogi were merged into the expanded city of Taketa. Therefore, Naoiri District was dissolved as a result of this merger.
Naoiri District, Ōita Wikipedia
Naoiri (直入郡, Naoiri-gun) was a district located in Ōita Prefecture, Japan.
As of 2003, the district had an estimated population of 10,956 and the density of 39.58 persons per km². The total area was 276.84 km².