As of June 1, 2019, the district has an estimated
population of 7,440 with a density of 117 inhabitants per square kilometre (300/sq mi). The total area is 63.39 km2 (24.48 sq mi).
After the third city of
Ichinoseki creation on September 20, 2005, the district has only one town left.
January 1, 1948 - The village of Yamame gained town status.
April 1, 1948 - The town of Ichinoseki, Yamame, Nakasato, and Madaki merged to form the city of
Ichinoseki (1st generation).
October 1, 1953 - The village of Hiraizumi gained town status.
January 1, 1955
The villages of Yasaka, Hagisho, and Ganmi merged with the village of Maikawa from
Higashiiwai District and the city of
Ichinoseki (1st generation) to form the city of
Ichinoseki (2nd generation).
The village of Hanaizumi, Nagai, Dotsu, Aburajima, Oimatsu, and Higata merged to form the town of
Hanaizumi.