Shikoku四国

Shikoku. A region (地方, chihō) of Japan.

The smallest of the four main islands. It has four prefectures, and no other region is on it.

A region has no assembly, no governor, and no budget. It is a grouping used in weather forecasts, school textbooks, and business planning, and its borders are a convention, not a law. Each prefecture in it is a government.

Open Shikoku on the map

Facts

Japanese name: 四国
Prefectures: 4
Population: 3,696,171 (2020 census)
Area: 18,804 km²
Density: 197 people per km²
Municipalities: 95
Most populous prefecture: Ehime 1,334,841
Designated cities: None

The 4 prefectures in Shikoku都道府県

Prefecture	Capital	Population	km²	Municipalities
Tokushima徳島県	Tokushima徳島市	719,559	4,147	24
Kagawa香川県	Takamatsu高松市	950,244	1,877	17
Ehime愛媛県	Matsuyama松山市	1,334,841	5,676	20
Kōchi高知県	Kōchi高知市	691,527	7,104	34

Population: 2020 Population Census (令和2年国勢調査), the prefectures added up. Area: Geospatial Information Authority of Japan (全国都道府県市区町村別面積調, 2020). Municipality counts are from the boundary data on the map.