Kasaoka Population 2026
Kasaoka has a population of 50,160, making it the #550 biggest city in 🇯🇵 Japan, located in Okayama. It is about 194× smaller than Tokyo, the country's biggest city.
Population (city proper)
50,160
Rank in Japan
#550
Coordinates
34.51°N, 133.50°E
~9 m elevation · Asia/Tokyo
Distance to capital (Tokyo)
578 km
359 miles, straight line
Other big cities in Okayama
Cities near Kasaoka
- Kamogatachō-kamogata18,412 people · ~9 km away
- Asakuchi32,772 people · ~10 km away
- Kannabechō-yahiro40,766 people · ~10 km away
- Ibara41,460 people · ~11 km away
- Fukuyama468,812 people · ~13 km away
- Shin’ichi21,030 people · ~22 km away
FAQ
What is the population of Kasaoka?
Kasaoka has a population of 50,160 (city proper, latest official figure via GeoNames), making it the #550 biggest city in Japan.
What region is Kasaoka in?
Kasaoka is located in Okayama, Japan.
Is Kasaoka the capital of Japan?
No, the capital of Japan is Tokyo, about 578 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.