Kainan Population 2026

Kainan has a population of 48,369, making it the #575 biggest city in 🇯🇵 Japan, located in Wakayama. It is about 201× smaller than Tokyo, the country's biggest city.

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

Population (city proper)

48,369

Rank in Japan

#575

Coordinates

34.15°N, 135.21°E

~3 m elevation · Asia/Tokyo

Distance to capital (Tokyo)

443 km

275 miles, straight line

Other big cities in Wakayama

City	Population	Rank in Japan
Minato	375,339	#57
Wakayama	356,729	#62
Tanabe	70,972	#391
Hashimoto	61,063	#454
Kinokawa	60,592	#460
Iwade	53,967	#513
Shingū	27,491	#888
Arida	26,755	#898

Cities near Kainan

Minato375,339 people · ~9 km away
Wakayama356,729 people · ~10 km away
Arida26,755 people · ~12 km away
Itogawa25,258 people · ~14 km away
Iwade53,967 people · ~14 km away
Hannan52,350 people · ~20 km away

FAQ

What is the population of Kainan?

Kainan has a population of 48,369 (city proper, latest official figure via GeoNames), making it the #575 biggest city in Japan.

What region is Kainan in?

Kainan is located in Wakayama, Japan.

Is Kainan the capital of Japan?

No, the capital of Japan is Tokyo, about 443 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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