Okayama Prefecture

Okayama Prefecture
岡山県
Japanese transcription(s)
  Japanese岡山県
  RōmajiOkayama-ken
A street in Okayama City, Okayama Prefecture at night
Anthem: Okayama-ken no uta
Coordinates: 34°39′42″N 133°56′5″E / 34.66167°N 133.93472°E / 34.66167; 133.93472
Country Japan
RegionChūgoku (Sanyō)
IslandHonshu
CapitalOkayama
SubdivisionsDistricts: 10, Municipalities: 27
Government
  GovernorRyūta Ibaragi
Area
  Total
7,114.50 km2 (2,746.92 sq mi)
  Rank17th
Population
 (1 February 2025)
  Total
1,826,059
  Rank20st
  Density260/km2 (660/sq mi)
GDP
  TotalJP¥ 7,842 billion
US$ 71.9 billion (2019)
ISO 3166 codeJP-33
Websitewww.pref.okayama.jp
Symbols of Japan
BirdLesser cuckoo (Cuculus poliocephalus)
FlowerPeach blossom (Prunus persica var. vulgaris)
TreeRed pine (Pinus densiflora)

Okayama Prefecture (岡山県, Okayama-ken, Japanese pronunciation: [o.kaꜜ.ja.ma, o.ka.ja.maꜜ.keɴ]) is a prefecture of Japan located in the Chūgoku region of Honshu. Okayama Prefecture has a population of 1,826,059 (1 February 2025) and has a geographic area of 7,114 km2 (2,746 sq mi). Okayama Prefecture borders Tottori Prefecture to the north, Hyōgo Prefecture to the east, and Hiroshima Prefecture to the west.

Okayama is the capital and largest city of Okayama Prefecture, with other major cities including Kurashiki, Tsuyama, and Sōja. Okayama Prefecture's south is located on the Seto Inland Sea coast across from Kagawa Prefecture on the island of Shikoku, which are connected by the Great Seto Bridge, while the north is characterized by the Chūgoku Mountains.