Okayama Population 2026

Okayama has a population of 724,691, making it the #21 biggest city in 🇯🇵 Japan, located in Okayama. Roughly 0.6% of Japan's population lives here. It is about 13× smaller than Tokyo, the country's biggest city.

Location of Okayama (capital Tokyo shown for reference). Boundaries: Natural Earth.

Population (city proper)

724,691

Rank in Japan

#21

Coordinates

34.65°N, 133.93°E

~5 m elevation · Asia/Tokyo

Distance to capital (Tokyo)

536 km

333 miles, straight line

Other big cities in Okayama

City	Population	Rank in Japan
Kurashiki	483,576	#34
Tsuyama	102,294	#264
Sōja	69,030	#404
Tamano	67,786	#414
Kasaoka	50,160	#550
Akaiwa	43,742	#623
Maniwa	42,725	#637
Ibara	41,460	#652

Cities near Okayama

Tamano67,786 people · ~15 km away
Sōja69,030 people · ~17 km away
Kurashiki483,576 people · ~17 km away
Setouchi36,048 people · ~19 km away
Akaiwa43,742 people · ~20 km away
Bizen39,117 people · ~32 km away

FAQ

What is the population of Okayama?

Okayama has a population of 724,691 (city proper, latest official figure via GeoNames), making it the #21 biggest city in Japan.

What region is Okayama in?

Okayama is located in Okayama, Japan.

Is Okayama the capital of Japan?

No, the capital of Japan is Tokyo, about 536 km away.

Sources & notes

Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.

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