Ichinoseki is a city located in Iwate Prefecture, in the Tōhoku region of northern Japan. As of 1 May 2020, the city had a population of 114,476 and a population density of 91 persons per km2 in 46,375 households. It is currently the second largest city by population in the prefecture, after Morioka. The total area of the city was 1,256.42 square kilometers.