Aso District, Kumamoto

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Aso (阿蘇郡, Aso-gun) is a district located in Kumamoto Prefecture, Japan.

As of the Aso and Yamato mergers (but with 2003 population data), the district has an estimated population of 40,841 and a density of 58.1 persons per square kilometer. The total area is 703.01 km².

The Aso clan comes from it