About Kasaoka
Kasaoka is a city in Okayama, Japan, with a population of about 46,088 inhabitants. About 37.0% of residents are aged 65 or over and the median age is 56.6. The average taxable income is about 285.5万 yen per taxpayer (2023). The population density is about 339/km² (ranked #312 of 531 covered cities), the home-ownership rate is 60.8% and the city counts 5 hospitals. Since 1980, the population has declined by 25.6% (-8.9% between 2015 and 2020). On this page you can find driving distances, travel time and routes from Kasaoka to major Japanese cities, nearby towns and the local climate.
Kasaoka — key statistics
Source: e-Stat — Statistics Bureau of Japan (census, housing & land survey, medical facilities & school surveys, municipal finance)
Kasaoka — population dynamics & households
In 2024, Kasaoka recorded 187 births and 797 deaths (natural change -610), with 1,105 people moving in and 1,234 moving out (net migration -129).
Source: e-Stat — System of Social and Demographic Statistics (vital statistics, migration report, census)
Kasaoka — official land prices 2026
The 2026 official land price survey lists 14 standard points in Kasaoka: residential land averages 34,971 yen/m² (median 31,700, highest 51,000), commercial land averages 61,567 yen/m², with an average change of -0.61 % over one year.
Source: MLIT — National Land Numerical Information, Official Land Price (L01) 2026
Distances from Kasaoka
Straight-line distance — click for the full driving route, time and fuel cost.
Nearby cities
Closest towns and cities around Kasaoka.
Train stations near Kasaoka
Closest railway stations.
Frequently asked questions
Kasaoka population?
About 46,088 inhabitants (2020 census).
Population density of Kasaoka?
About 339 inhabitants/km² (area 136.1 km²).
Average rent in Kasaoka?
About 1,918 yen per tatami per month (2018 Housing and Land Survey).
Distance from Kasaoka to Tokyo?
About 579 km in a straight line.