Iyo District, Ehime

Iyo (伊予郡, Iyo-gun) is a district located in Ehime Prefecture, Japan. The district contains two towns: Masaki and Tobe. As of 2004 the estimated population is 52,832 with a total area is 121.89 km².

History
  • 1887 — The villages of Habu and Yodo were reassigned to the Onsen District (now the city of Matsuyama).
  • 1889
    • The village of Nakayama in Kita District was reassigned to the Shimoukena District.
    • The village of Kurita in Shimoukena District merged into the village of Hirota in Shimoukena District.
  • 1896 — The villages of Haramachi, Tobe, Hirota, Nakayama, Izubuchi, Saredani, Kaminada, and Shimonada were reassigned from the Shimoukena District to the Iyo District. (1 town, 15 villages)
  • January 1, 1907 — The village of Izubuchi merged into the village of Nakayama. (1 town, 12 villages)
  • September 30, 1908 — Parts of the village of Shimonada merged into the village of Michiho in Kita District (now the town of Uchiko)
  • September 3, 1921 — The village of Kaminada gained town status. (2 towns, 13 villages)
  • October 31, 1922 — The village of Masaki gained town status. (3 towns, 12 villages)
  • April 1, 1925
    • Parts of the village of Kaminada merged into the village of Minamiyamasaki.
    • The village of Nakayama gained town status. (4 towns, 11 villages)
  • November 10, 1928 — The village of Tobe gained town status. (5 towns, 10 villages)
  • March 15, 1929 — Parts of the village of Hirota (former village of Kurita areas) merged into the town of Nakayama.
  • January 1, 1940 — The village of Gunchū merged into the town of Gunchū. (5 towns, 9 villages)
  • January 1, 1955 — The villages of Minamiyamasaki, Kitayamasaki, Minamiiyo, and the town of Gunchū merged to form the city of Iyo. (4 towns, 6 villages)
  • February 1, 1955 — The village of Saredani merged into the town of Nakayama. (4 towns, 5 villages)
  • March 31, 1955
    • The village of Haramachi merged into the town of Tobe. (4 towns, 4 villages)
    • The villages of Kitaiyo and Okada merged into the town of Masaki. (4 towns, 2 villages)
    • The town of Kaminada and the village of Shimonada merged to form the town of Futami. (4 towns, 1 village)
  • November 1, 1958 — Parts of the city of Iyo merged into the town of Tobe.
  • January 1, 2005 — The village of Hirota merged into the town of Tobe. (4 towns)
  • April 1, 2005 — The towns of Nakayama and Futami merged into the city of Iyo. (2 towns)

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