Nagasu Town

Kumamoto Prefecture · Town

Official website Kumamoto Prefecture page

Nagasu Town faces the Ariake Sea in northwestern Kumamoto Prefecture and is known for raising goldfish and nishikigoi (ornamental carp). Land reclaimed since the Edo period spreads across the town, and the Ariake Ferry runs from the Port of Nagasu to the Shimabara Peninsula. Factories, including a shipyard, line the coast.

Key facts

Population: 14,534 1,021st in Japan2025 Census
5-year change: −5.5% 1,034th in Japanfrom 15,372 in 2020
Area: 19.44 km² 1,569th in Japan
Population density: 748 people/km² 434th 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

PortPort of Nagasu
All Ports Wikipedia (Japanese)Photo: そらみみ / CC BY-SA 4.0

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).

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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