About Aso
Aso is a city in Kumamoto, Japan, with a population of about 24,930 inhabitants. About 40.3% of residents are aged 65 or over and the median age is 58.5. The average taxable income is about 269.5万 yen per taxpayer (2023). The population density is about 66/km² (ranked #492 of 531 covered cities), the home-ownership rate is 60.4% and the city counts 4 hospitals. Since 1980, the population has declined by 26.7% (-7.7% between 2015 and 2020). On this page you can find driving distances, travel time and routes from Aso to major Japanese cities, nearby towns and the local climate.
Aso — key statistics
Source: e-Stat — Statistics Bureau of Japan (census, housing & land survey, medical facilities & school surveys, municipal finance)
Aso — population dynamics & households
In 2024, Aso recorded 105 births and 464 deaths (natural change -359), with 797 people moving in and 919 moving out (net migration -122).
Source: e-Stat — System of Social and Demographic Statistics (vital statistics, migration report, census)
Aso — official land prices 2026
The 2026 official land price survey lists 3 standard points in Aso, with an average change of +0.17 % over one year.
Source: MLIT — National Land Numerical Information, Official Land Price (L01) 2026
Distances from Aso
Straight-line distance — click for the full driving route, time and fuel cost.
Nearby cities
Closest towns and cities around Aso.
Train stations near Aso
Closest railway stations.
Frequently asked questions
Aso population?
About 24,930 inhabitants (2020 census).
Population density of Aso?
About 66 inhabitants/km² (area 376.3 km²).
Average rent in Aso?
About 1,512 yen per tatami per month (2018 Housing and Land Survey).
Distance from Aso to Tokyo?
About 849 km in a straight line.