Hiroshima Prefecture

Hiroshima Prefecture
広島県
Japanese transcription(s)
 • Japanese広島県
 • RōmajiHiroshima-ken
Country Japan
RegionChūgoku (San'yō)
IslandHonshu
CapitalHiroshima
SubdivisionsDistricts: 5, Municipalities: 23
Government
 • GovernorMika Yokota (since November 2025)
Area
 • Total
8,479.63 km2 (3,274.00 sq mi)
 • Rank11th
Population
 (June 1, 2019)
 • Total
2,811,410
 • Rank12th
 • Density331.549/km2 (858.707/sq mi)
 • Dialects
Aki・Bingo
GDP
 • TotalJP¥ 12,476 billion
US$ 92.1 billion (2022)
ISO 3166 codeJP-34
Websitepref.hiroshima.lg.jp
Symbols of Japan
BirdRed-throated diver (Gavia stellata)
TreeJapanese maple (Acer palmatum)

Hiroshima Prefecture (広島県, Hiroshima-ken; Japanese pronunciation: [çi.ɾo.ɕi.ma, -maꜜ.keɴ]) is a prefecture of Japan located in the Chūgoku region of Honshu. Hiroshima Prefecture has a population of 2,811,410 (1 June 2019) and has a geographic area of 8,479 km2 (3,274 sq mi). Hiroshima Prefecture borders Okayama Prefecture to the east, Tottori Prefecture to the northeast, Shimane Prefecture to the north, and Yamaguchi Prefecture to the southwest. Hiroshima Prefecture also borders Ehime Prefecture for 74 metres (243 ft) on Hyōtanjima.

Hiroshima is the capital and largest city of Hiroshima Prefecture, and the largest city in the Chūgoku region, with other major cities including Fukuyama, Kure, and Higashihiroshima. Hiroshima Prefecture is located on the Seto Inland Sea across from the island of Shikoku, and is bounded to the north by the Chūgoku Mountains. Hiroshima Prefecture is one of the three prefectures of Japan with more than one UNESCO World Heritage Site. Known globally for the atomic bombing of 1945, Hiroshima has since rebuilt into a major regional center of industry, education, and culture. Its demographic profile is particularly significant from a population-studies perspective: the city has undergone dramatic population reconstruction after WWII, experienced the demographic transitions associated with Japan’s rapid economic growth, and now faces the contemporary challenges of low fertility, population aging, and gradual population decline.