Otsuki Town

Kochi Prefecture · Town

Otsuki Town, at the southwestern tip of Kochi Prefecture, faces the Pacific Ocean and the Bungo Channel, and its coast is part of Ashizuri-Uwakai National Park. Kashiwa-jima is a famous diving spot known for its very clear sea and many kinds of fish. The cliffs of the Odo Coast are also here, and fisheries operate at many fishing ports.

Key facts

Population: 3,894 1,489th in Japan2025 Census
5-year change: −12.2% 238th in Japanfrom 4,434 in 2020
Area: 103 km² 961st in Japan
Population density: 38 people/km² 1,371st in Japan

Source: Statistics Bureau of Japan, 2025 Population Census (population, area and density); area from the Geospatial Information Authority of Japan (GSI), Area Statistics of Prefectures and Municipalities (2025). National ranks are among the 1,741 municipalities, ordered by this site from these values.

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Places to visit

Chosen automatically, most popular first, from landmarks and cultural properties registered in Wikidata (we have not checked whether each is open). Names and descriptions: Wikidata (CC0); photos: Wikimedia Commons (photographer and license under each photo).

National parks in this town

Ashizuri-Uwakai National ParkTotal park area 113 km²Spans Ehime, Kochi

Chosen by overlaying the park boundaries (Ministry of the Environment, Biodiversity Center of Japan, "National Park Areas" GIS data, updated April 28, 2025, combined and simplified by NIPPON ATLAS) with municipal boundaries (National Land Numerical Information, January 2021), keeping overlaps of about 0.5 km² or more (approximate). Areas are the land areas from the Ministry of the Environment, "Overview of National Parks" (April 10, 2026). All national parks

Neighboring municipalities

Municipalities sharing a boundary (computed from the National Land Numerical Information administrative boundaries, January 2021).

The description was written for this site, picking out representative features.

Figures come from official Japanese statistics (such as the 2025 Census by the Statistics Bureau of Japan), with the source and year shown next to each one. Photos are freely licensed images from Wikimedia Commons; the photographer and license are shown under each photo.

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