is a city located in Kumamoto Prefecture, Japan.
The modern city of Aso was established on February 11, 2005, from the merger of the former town of Aso, absorbing the town of Ichinomiya, and the village of Namino (all from Aso District).
As of March 31, 2017, the city has an estimated population of 27,039, with 11,355 households and a population density of 72 persons per km2. The total area is 376.25 km2.
The city is situated within Aso Caldera. The source of the Kikuchi River is located in the city.
Geography
Climate
Aso has a humid subtropical climate (Köppen climate classification Cfa) with hot, humid summers and cool winters. There is significant precipitation throughout the year, especially during June and July. The average annual temperature in Aso is . The average annual rainfall is with June as the wettest month. The temperatures are highest on average in August, at around , and lowest in January, at around . The highest temperature ever recorded in Aso was on 11 August 2016; the coldest temperature ever recorded was on 25 January 1998.
Demographics
Per Japanese census data, the population of Aso in 2020 is 24,930 people. Aso has been conducting censuses since 1920.
Tourism
Places of interest
Aso Geopark
Aso Kujū National Park
Mount Aso
Mount Aso Ropeway
Aso Volcano Museum
Aso Uchinomaki Spa
Aso Akamizu Spa
Sensuikyo
Sensuikyo Ropeway (cable car) Aso Shrine
Notable people
Fictional characters born in Aso
Misae Nohara (born in Aso, Kumamoto, née Koyama).
Tomohiko Amada (from Killing Commendatore by Haruki Murakami)