Kōhoku is a town located in Kishima District, Saga Prefecture, Japan. It is known as a crossroads for railways and national highways, and as such has dubbed itself "the navel of Saga". As of 31 May 2024, the town had an estimated population of 9586 in 3715 households, and a population density of 750 persons per km². The total area of the town is 24.88 km2