Kurihara is a city located in Miyagi Prefecture, Japan. As of 30 April 2020, the city had an estimated population of 66,565, and a population den…Kurihara is a city located in Miyagi Prefecture, Japan. As of 30 April 2020, the city had an estimated population of 66,565, and a population density of 83 persons per km² in 24,994 households. The total area of the city is 804.97 square kilometres. Parts of the city are within the borders of the Kurikoma Quasi-National Park.