Aso Population 2026

Aso has a population of 27,039, making it the #894 biggest city in 🇯🇵 Japan, located in Kumamoto. It is about 360× smaller than Tokyo, the country's biggest city.

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

Population (city proper)

27,039

Rank in Japan

#894

Coordinates

32.94°N, 131.08°E

~520 m elevation · Asia/Tokyo

Distance to capital (Tokyo)

848 km

527 miles, straight line

Other big cities in Kumamoto

City	Population	Rank in Japan
Kumamoto	738,907	#19
Kotō	543,730	#27
Honmachi	123,067	#218
Amakusa	83,082	#334
Tamana	64,292	#436
Kōshi	61,772	#445
Uki	59,928	#469
Arao	53,675	#515

Cities near Aso

Ōzu35,187 people · ~20 km away
Kikuchi49,455 people · ~25 km away
Okino43,337 people · ~28 km away
Kōshi61,772 people · ~29 km away
Shimada32,510 people · ~34 km away
Mifune16,901 people · ~34 km away

FAQ

What is the population of Aso?

Aso has a population of 27,039 (city proper, latest official figure via GeoNames), making it the #894 biggest city in Japan.

What region is Aso in?

Aso is located in Kumamoto, Japan.

Is Aso the capital of Japan?

No, the capital of Japan is Tokyo, about 848 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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