Kōchi is the capital city of Kōchi Prefecture located on the island of Shikoku in Japan. With over 40% of the prefectural population, Kōchi is the main commercial and industrial centre and the "primate city" of the prefecture. As of 1 April 2023, the city had an estimated population of 311,224 in 163,479 households, and a population density of 1,000 persons per km2. The total area of the city is 309.00 square kilometres (119.31 sq mi).