April 1, 1889 - Municipal status enforcement. They were 39 villages within the district.
April 17, 1889 - The village of Shimoichi was renamed and elevated to town status to become the town of Takehara (1 town, 38 villages).
October 1, 1890 - The village of Yokkaichijirōmaru was renamed and elevated to town status to become the town of
Saijō (2 towns, 37 villages).
April 12, 1893 - The village of Mitsu was elevated to town status to become the town of Mitsu (3 towns, 36 villages).
January 1, 1896 - The village of Uchinoumi was elevated to town status to become the town of Uchinoumi (4 towns, 35 villages).
May 1, 1897 - The village of Aga was elevated to town status to become the town of Aga (5 towns, 34 villages).
January 1, 1907 - The village of Nigata was elevated to town status to become the town of Nigata (6 towns, 33 villages).
January 1, 1922 - The village of Kawajiri was elevated to town status to become the
town of Kawajiri (7 towns, 32 villages).
January 1, 1922 - The town of Mitsuguchi was elevated to town status to become the town of Mitsuguchi (8 towns, 31 villages).
April 1, 1928 - The city of Kure absorbed the town of Aga, and the towns of Kegoya and Yoshiura (both from
Aki District) (7 towns, 31 villages).
January 1, 1929 - The village of Uchinoumiato was renamed as the village of 安登村.
July 1, 1939 - The town of Saijō absorbed the villages of Shitami, Misonou, Yoshitomi and Teranishi to create the town of Saijō (7 towns, 27 villages).
April 21, 1941 - The village of Kure absorbed the town of Nigata, and the village of Hiro (6 towns, 26 villages).
April 1, 1942 - The villages of Nakagiri and Noro were merged to create the village of Noro (6 towns, 25 villages).
January 1, 1943 - The town of Mitsu, and the village of Hayatahara were merged with the village of Kidani (from Toyota District) to create the
town of Akitsu (6 towns, 24 villages).
January 1, 1944 - The towns of Uchinoumi and Mitsuguchi, and the village of Noro were merged to create the
town of Yasuura (5 towns, 23 villages).
April 1, 1950 - The localities of Saijōhigashi and Teraie (within the town of Saijō) were split from Saijō to become the village of Teranishi (5 towns, 24 villages).
June 10, 1950 - The village of Zōga absorbed the village of Tono (from Toyota District).
March 1, 1951 - The village of Kumanoato was moved to
Aki District (5 towns, 23 villages. Later the town merged into the city of Hiroshima on November 1, 1974)
April 1, 1952 - The town of Takehara absorbed the village of Shimono to create the town of Takehara (5 towns, 22 villages).
April 1, 1952 - The village of Teranishi was elevated to town status to become the town of Teranishi (6 towns, 21 villages).
March 31, 1954 - The villages of Nishitakaya and Higashitakaya were merged to create the village of Takaya (6 towns, 20 villages).
March 31, 1954 - The villages of Kamikurose, Shimokurose, Nakakurose and Nominoo were merged to create the
town of Kurose (7 towns, 16 villages).
March 31, 1954 - The town of Takehara absorbed the village of Higashino and the village of Ōnori and parts of the village of Minamigata (all from Toyota District) (7 towns, 15 villages).
January 1, 1955 - The town of Saijō absorbed the localities of Shimominaga and Kamiminaga from the village of Kanaga (7 towns, 14 villages).
March 31, 1955 - The town of Takehara absorbed the village of Shōno, and the village of Tamari (from Toyota District) were to create the town of Takehara (7 towns, 13 villages).
March 31, 1955 - The town of Kurose absorbed the locality 小多田・国近 from the village of Itaki.
March 31, 1955 - The town of Saijō absorbed the villages of Gōda and Itaki (excluding 小多田・国近). At this point, the village of Itaki dissolved (7 towns, 11 villages).
March 31, 1955 - The village of Takaya absorbed the village of 小谷村 (from Toyota District) and was elevated to town status to become the
town of Takaya (8 towns, 10 villages).
August 1, 1955 - The villages of Shiwahori, Nishishiwa and Higashishiwa were merged to form the
town of Shiwa (9 towns, 7 villages).
As of March 31, 1956 (before the change to the municipalities within both Kamo and Toyota Districts)
Akitsu (安芸津町) → Moved to Toyota District (merged into the city of Higashihiroshima on February 7, 2005)
Kawajiri (川尻町) → Moved to Toyota District (merged into the city of Kure on April 1, 2004)
Kurose (黒瀬町) → Remained in Kamo District
Saijō (西条町) → Remained in Kamo District
Shiwa (志和町) → Remained in Kamo District
Takaya (高屋町) → Remained in Kamo District
Takehara (竹原町) → Moved to Toyota District (merged with the town of Tadanoumi, Toyota District on November 11, 1958, and moved to the city of Takehara)
Teranishi (寺西町) → Remained in Kamo District
Yasuura (安浦町) → Moved to Toyota District (merged into the city of Kure on March 20, 2005)
Ato (安登村) → Moved to Toyota District (split and merged into the towns of Kawajiri and Yasuura, Toyota District, on April 1, 1958, and dissolved)
Kanaga (賀永村) → Moved to Toyota District (split and merged into the town of Saijō, Kamo District, and the town of Takehara, Toyota District, on September 30, 1956, and dissolved)
Kawakami (川上村) → Remained in Kamo District
Gōhara (郷原村) → Remained in Kamo District
Zōga (造賀村) → Remained in Kamo District
Hara (原村) → Remained in Kamo District
Yoshikawa (吉川村) → Remained in Kamo District
(Total of 9 towns, 7 villages)
As of April 1, 1956 (after the change to the municipalities within both Kamo and Toyota Districts)
April 1, 1956 - 4 towns and 1 village within Toyota District moved to Kamo District, while 4 towns and 2 villages within Kamo District moved to Toyota District. At this time, the district had 9 towns and 6 villages.
September 1, 1956 - The villages of Kawakami, Hara and Yoshikawa were merged to create the
town of Hachihonmatsu (10 towns, 3 villages).
September 30, 1956 - The town of Kōchi absorbed the village of Nyūno (10 towns, 2 villages).
September 30, 1956 - The town of Saijō absorbed parts of the locality of Nika from the village of Kanaga (the remaining parts merged into the town of Takehara).
October 1, 1956 - The city of Kure absorbed the village of Gōhara, the town of Tennō, and the village of Shōwa (from Aki District) (10 towns, 1 village).
January 1, 1958 - The town of Takaya absorbed the village of Zōga (10 towns).
October 1, 1959 - The town of Saijō absorbed the town of Teranishi (9 towns).
April 20, 1974 - The towns of
Saijō, Shiwa, Takaya and Hachihonmatsu were merged to create the city of Higashihiroshima (5 towns).
February 7, 2005 - The towns of Fukutomi, Kurose, Kōchi and Toyosaka, along with the town of Akitsu (from Toyota District) were merged into the expanded city of Higashihiroshima (1 town).
March 22, 2005 - The town of Daiwa, along with the
town of Hongō (from Toyota District), and the
town of Kui (from
Mitsugi District), was merged into the expanded city of Mihara. Kamo District was dissolved as a result of this merger.[1]