Oshu City

Iwate Prefecture · City

Oshu City was formed in 2006 by the merger of Mizusawa City, Esashi City and others, and it has the 2nd largest population in the prefecture. It is known for Maesawa beef, a brand of beef, Nanbu ironware, and the Esashi-Fujiwara Heritage Park, which recreates the era of the Oshu Fujiwara clan. The ancient Isawa Castle site and the Tsunozuka Kofun (burial mound) also remain. The city's summer-autumn green peppers rank 3rd in Japan.

Key facts

Population: 103,802 264th in Japan2025 Census
5-year change: −8.1% 719th in Japanfrom 112,937 in 2020
Area: 993 km² 30th in Japan
Population density: 105 people/km² 1,033rd 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).

Mountains in this city

Mt. Yakeishi1,548 m

Mountains whose summit is in this municipality (mountains of 800 m or higher on this site's map, and mountains in the famous-mountain lists). Elevations from Wikidata and other sources.

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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