Akō is a city located in southwestern Hyōgo Prefecture, Japan. As of 31 May 2022, the city had an estimated population of 45,747 in 20,563 households and a population density of 360 persons per km2. The total area of the city is 126.85 square kilometres (48.98 sq mi).

Hyōgo Prefecture is a prefecture of Japan located in the Kansai region of Honshu. Hyōgo Prefecture has a population of 5,469,762 and a geographic area of 8,400 square kilometres. Hyōgo Prefecture borders Kyoto Prefecture to the east, Osaka Prefecture to the southeast, and Okayama and Tottori prefectures to the west.