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Okayama Prefecture

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Okayama Prefecture

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prefecture of Japan

OverviewAI-generated

Okayama Prefecture is an active administrative facility located in Japan, with its seat in the city of Okayama. The prefecture was established on August 29, 1871. It covers a total area of 7113.21, of which 0.3 percent is water. The population is 1878884. The name in kana is written as おかやまけん.

The official postal code for the prefecture is 700-8570. Its official website provides information for residents, described as a homepage for Okayama Prefecture. The subject is referenced by 1,908 other encyclopedia articles.

Synthesized by Vinony from 24 facts across 4 sources: Wikidata, Firecrawl, ROR, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Research organization · ROR

Type
Facility
Location
Okayama, Japan
Status
Active

GRID grid.505727.2 · ISNI 0000 0004 0404 2996

Official website

Link to the official site · not written by Vinony

Wikidata facts

Named after
Okayama
Country
Japan
Located in
Japan
Contains
Asakuchi
Capital
Okayama
Population
1878884
Area
7113.21
Time zone
UTC+09:00
Body of water
Seto Inland Sea
Head of government
Ryūta Ibaragi
Shares border with
Kagawa Prefecture
Highest point
Mount Ushiro
Image
Okayama Castle, November 2016 -02.jpg
Show 16 more facts
Commons category
Okayama prefecture
topic's main category
Category:Okayama Prefecture
category for people born here
Category:Births in Okayama prefecture
category of associated people
Category:People from Okayama Prefecture
Commons gallery
Okayama prefecture
twinned administrative body
South Gyeongsang
native label
岡山県
water as percent of area
0.3
name in kana
おかやまけん
official symbol
Green Pheasant
territory overlaps
Kibi Province
postal code
700-8570
topic has template
Template:Okayama
OpenStreetMap zoom level
7
associated electoral district
Okayama 5th district
inception
1871-08-29
Sources (12)

via Wikidata · CC0

~7 min read

Encyclopedic overview

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 1,815,165 (1 October 2025) and has a geographic area of 7,114 km (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.

Excerpted from Wikipedia’s “Okayama Prefecture” article, available under the CC BY-SA 4.0 licence.

Gallery (12)

On the map