Map of Aikō District with Meiji period area in yellow, modern area in green 1. - Aikawa , 2. - Kiyokawa
Aikō District (愛甲郡 , Aikō-gun ) is a district located in central Kanagawa Prefecture , Japan . It currently consists of only one town, Aikawa , and one village, Kiyokawa . The city of Atsugi was formerly part of Aikō District .
Towns and villages
History
Historic Map of Aikō District
Aikō District was one of the ancient subdivisions of Sagami Province , extending from central Sagami north to the border of Musashi Province between the Sagami River and the Tanzawa Mountains . The district offices were located in what is now part of Atsugi. The area was part of a vast shōen controlled by the Ōe clan , and their descendants, the Mōri clan of Chōshū from the Heian period through the Sengoku period . It later became a contested area between the later Hōjō clan of Odawara and the Takeda clan of Kai . In the Edo period , it was nominally part of Odawara Domain , although large portions were tenryō territory controlled by the shōgun in Edo through various hatamoto . From 1706, a branch of the Ōkubo clan in Odawara was permitted to establish the Ogino-Yamanaka Domain on a portion of the district. Other portions of the district came under control of Karasuyama Domain of Shimōsa Province .
With the Meiji Restoration of 1868, Ogino-Yamanaka Domain came under the control of Shizuoka Domain , while remaining territories became part of the new Kanagawa Prefecture. With the abolition of the han system in 1871, former Ogino-Yamanaka Domain became Ogino-Yamanaka Prefecture, and subsequently part of the short-lived Ashigaru Prefecture. It merged with Kanagawa Prefecture in 1876.
Timeline
The new Aikō and Tsukui Districts were established in 1878.
In 1889, Aikō District was administratively divided into the following municipalities:
one town (Atsugi)
16 villages (Koayu, Tamagawa, Nanmori, Mita, Tanasawa, Shimokawairi, Tsumada, Oikawa, Hayashi, Echi, Ogino, Aikawa, Takamine, Nakatsu, Susugaya and Miyagase)
In 1940, Aikawa Village was elevated to town status.
In 1946, Mutsuai Village was created through the merger of six villages (Mita, Tanasawa, Shimokawairi, Tsumada, Oikawa and Hayashi).
In 1955:
January 15 – The village of Takamine was absorbed into Aikawa.
February 1 – The village of Mutsuai merged with the town of Atsugi and three other villages (Koayu, Tamagawa and Nanmori) to form the city of Atsugi.
July 8 – The village of Echi was absorbed into Atsugi.
In 1956:
September 30 – Kiyokawa Village was created through the merger of two villages (Susugaya and Miyagase).
September 30 – The village of Nakatsu was absorbed into Aikawa.
September 30 – The village of Ogino was absorbed into Atsugi.
Merger table
pre-1889
April 1, 1889
1889–1926
1926–1943
1944–1954
1955–1989
1989–Present
Present
Atsugi town
Atsugi town
Atsugi town
Atsugi town
February 1, 1955 Atsugi city
Atsugi city
Atsugi city
Koayu village
Koayu village
Koayu village
Koayu village
Tamagawa village
Tamagawa village
Tamagawa village
Tamagawa village
Nanmori village
Nanmori village
Nanmori village
Nanmori village
Mita village
Mita village
Mita village
June 1, 1946 Mutsuai village
Tanasawa village
Tanasawa village
Tanasawa village
Shimokawairi village
Shimokawairi village
Shimokawairi village
Tsumada village
Tsumada village
Tsumada village
Oikawa village
Oikawa village
Oikawa village
Hayashi village
Hayashi village
Hayashi village
Echi village
Echi village
Echi village
Echi village
July 8, 1955 merged with Atsugi city
Ogino village
Ogino village
Ogino village
Ogino village
September 30, 1956 merged with Atsugi city
Aikawa village
Aikawa village
April 1, 1940 Aikawa town
Aikawa town
January 15, 1955 Aikawa town
Aikawa town
Aikawa town
Takamine village
Takamine village
Takamine village
Takamine village
Nakatsu village
Nakatsu village
Nakatsu village
Nakatsu village
September 30, 1956 merged with Aikawa town
Susugaya village
Susugaya village
Susugaya village
Susugaya village
September 30, 1956 Kiyokawa village
Kiyokawa village
Kiyokawa village
Miyagase village
Miyagase village
Miyagase village
Miyagase village
35°29′59″N 139°15′12″E / 35.49972°N 139.25333°E / 35.49972; 139.25333