Climate
About Kainan
Kainan is a city in Wakayama, Japan, with a population of about 48,369 inhabitants. About 36.6% of residents are aged 65 or over and the median age is 55.3. The average taxable income is about 324.1万 yen per taxpayer (2023). The population density is about 478/km² (ranked #271 of 531 covered cities), the home-ownership rate is 62.9% and the city counts 5 hospitals. Since 1980, the population has declined by 30.8% (-6.7% between 2015 and 2020). On this page you can find driving distances, travel time and routes from Kainan to major Japanese cities, nearby towns and the local climate.
Kainan — key statistics
Source: e-Stat — Statistics Bureau of Japan (census, housing & land survey, medical facilities & school surveys, municipal finance)
Kainan — population dynamics & households
In 2024, Kainan recorded 212 births and 817 deaths (natural change -605), with 1,118 people moving in and 1,160 moving out (net migration -42).
Source: e-Stat — System of Social and Demographic Statistics (vital statistics, migration report, census)
Kainan — official land prices 2026
The 2026 official land price survey lists 12 standard points in Kainan: residential land averages 53,640 yen/m² (median 47,200, highest 70,900), commercial land averages 78,450 yen/m², with an average change of -0.88 % over one year.
Source: MLIT — National Land Numerical Information, Official Land Price (L01) 2026
Distances from Kainan
Straight-line distance — click for the full driving route, time and fuel cost.
Nearby cities
Closest towns and cities around Kainan.
Train stations near Kainan
Closest railway stations.
Frequently asked questions
Kainan population?
About 48,369 inhabitants (2020 census).
Population density of Kainan?
About 478 inhabitants/km² (area 101.1 km²).
Average rent in Kainan?
About 1,747 yen per tatami per month (2018 Housing and Land Survey).
Distance from Kainan to Tokyo?
About 443 km in a straight line.