Hachinohe (八戸市, Hachinohe-shi) is a city located in Aomori Prefecture, Japan. As of 1 August 2023[update], the city had an estimated population of 216,416 in 110,195 households, and a population density of 708 persons per km2,[1] making it Aomori Prefecture's second largest city by population. The city has a total area of 305.56 square kilometres (117.98 sq mi). Hachinohe is located in the flatlands on the southeast coast of Aomori Prefecture, facing the Pacific Ocean. Both the Oirase River and the Mabechi River flow through Hachinohe. A portion of the coastal areas of the city were within the borders of the Tanesashi Kaigan Hashikamidake Prefectural Natural Park, which was incorporated into the Sanriku Fukkō National Park in 2013.[2][3] Aomori Prefecture