Aso District, known in Japanese as Aso-gun, is a district situated within Kumamoto Prefecture in Japan. It occupies a specific geographic location defined by coordinates at 32.8728 degrees north latitude and 131.0885 degrees east longitude. The district functions as an administrative division within the broader prefectural structure of the country.

The area holds historical significance as the origin point of the Aso clan, a notable lineage associated with the region. While the district itself has maintained its identity, significant municipal restructuring occurred in the early twenty-first century, altering the composition of local governance and territorial boundaries across the prefecture.

Geographically, the district covers a total area of 703.01 square kilometers. It is composed of several distinct municipalities including Minamioguni, Oguni, Takamori, Minamiaso, Nishihara, and Ubuyama. These towns and villages form the current administrative landscape of the district, each contributing to its local character.

The heritage of the Aso clan provides a unique cultural anchor for the region, distinguishing it from other areas in Kumamoto Prefecture. This historical connection shapes the local identity and offers insight into the feudal history that influenced the development of settlements throughout the district over many centuries.

As of 2024, the population of Aso District was recorded at 32,882 residents. This demographic data reflects the current size of the community living within the district's boundaries. The population figure provides a snapshot of the human presence in this specific part of Japan during the specified year.