Population of Kumamoto, Japan as of September 2025. How many people live in Kumamoto today?

The exact population of Kumamoto as of September 2025 is estimated at 738,907 residents. Please note: this figure is an estimate and may slightly change as people get born and pass away, it also depends on migration to/from Kumamoto.

Check out more data on population in Japan:

• Yamagata
• Saga
• Fuchū
• Neyagawa
• Kure
• Sasebo
• Hiratsuka