Japan · prefecture
Kumamoto population 2026
熊本県
Kumamoto has 1,697,000 people on the latest official figure, for 1 October 2024 (published to the nearest thousand), 12,000 fewer than a year earlier (−0.70%). It is 23rd of Japan’s 47 prefectures by population, home to 1.4% of Japan’s people.
If last year’s change continues: about 1.7 million by 1 July 2026. That is our arithmetic, not an official figure.
Kumamoto in numbers
- Population
- 1.7 million 1 October 2024
- Change in a year
- −0.70% −12,000 people
- Share of Japan
- 1.4% 23rd of 47 prefectures
- Population density
- 229per km² 7,404 km²
That is about as many people as Bahrain (1.7 million).
Population of Kumamoto by year
› Show the numbers as a table
| Year | Population |
|---|---|
| 2021 | 1,728,000 |
| 2022 | 1,718,000 |
| 2023 | 1,709,000 |
| 2024 | 1,697,000 |
| Year | Population | Change | % |
|---|---|---|---|
| 2024 | 1,697,000 | −12,000 | −0.70% |
| 2023 | 1,709,000 | −9,000 | −0.52% |
| 2022 | 1,718,000 | −10,000 | −0.58% |
| 2021 | 1,728,000 | – | – |
Kumamoto among Japan’s prefectures
Full ranking →| # | |||||
|---|---|---|---|---|---|
| 1 | Tokyo | 14,178,000 | +0.65% | 11.5% | 6,462 |
| 2 | Kanagawa | 9,225,000 | −0.04% | 7.5% | 3,818 |
| 3 | Osaka | 8,757,000 | −0.07% | 7.1% | 4,596 |
| 4 | Aichi | 7,460,000 | −0.23% | 6.0% | 1,442 |
| 5 | Saitama | 7,332,000 | +0.01% | 5.9% | 1,931 |
| 6 | Chiba | 6,251,000 | −0.10% | 5.0% | 1,212 |
| 7 | Hyogo | 5,337,000 | −0.61% | 4.3% | 635 |
| 8 | Fukuoka | 5,092,000 | −0.22% | 4.1% | 1,024 |
| 9 | Hokkaido | 5,043,000 | −0.96% | 4.1% | 60 |
| 10 | Shizuoka | 3,527,000 | −0.79% | 2.8% | 453 |
| 11 | Ibaraki | 2,806,000 | −0.67% | 2.3% | 460 |
| 12 | Hiroshima | 2,714,000 | −0.88% | 2.2% | 320 |
| 13 | Kyoto | 2,520,000 | −0.59% | 2.0% | 546 |
| 14 | Miyagi | 2,248,000 | −0.71% | 1.8% | 309 |
| 15 | Niigata | 2,099,000 | −1.27% | 1.7% | 167 |
| 16 | Nagano | 1,987,000 | −0.85% | 1.6% | 146 |
| 17 | Gifu | 1,916,000 | −0.78% | 1.5% | 180 |
| 18 | Gunma | 1,890,000 | −0.63% | 1.5% | 297 |
| 19 | Tochigi | 1,885,000 | −0.63% | 1.5% | 294 |
| 20 | Okayama | 1,831,000 | −0.87% | 1.5% | 257 |
| 21 | Fukushima | 1,743,000 | −1.36% | 1.4% | 126 |
| 22 | Mie | 1,711,000 | −0.93% | 1.4% | 296 |
| 23 | Kumamoto | 1,697,000 | −0.70% | 1.4% | 229 |
| 24 | Kagoshima | 1,532,000 | −1.10% | 1.2% | 168 |
| 25 | Okinawa | 1,466,000 | −0.14% | 1.2% | 643 |
| 26 | Shiga | 1,402,000 | −0.35% | 1.1% | 349 |
| 27 | Nara | 1,285,000 | −0.85% | 1.0% | 348 |
| 28 | Yamaguchi | 1,281,000 | −1.31% | 1.0% | 210 |
| 29 | Ehime | 1,276,000 | −1.16% | 1.0% | 225 |
| 30 | Nagasaki | 1,252,000 | −1.18% | 1.0% | 305 |
| 31 | Aomori | 1,165,000 | −1.60% | 0.9% | 121 |
| 32 | Iwate | 1,145,000 | −1.55% | 0.9% | 75 |
| 33 | Ishikawa | 1,098,000 | −0.99% | 0.9% | 262 |
| 34 | Oita | 1,085,000 | −1.00% | 0.9% | 171 |
| 35 | Miyazaki | 1,033,000 | −0.86% | 0.8% | 134 |
| 36 | Yamagata | 1,011,000 | −1.46% | 0.8% | 108 |
| 37 | Toyama | 997,000 | −0.99% | 0.8% | 235 |
| 38 | Kagawa | 917,000 | −0.97% | 0.7% | 493 |
| 39 | Akita | 897,000 | −1.86% | 0.7% | 77 |
| 40 | Wakayama | 880,000 | −1.34% | 0.7% | 186 |
| 41 | Yamanashi | 791,000 | −0.63% | 0.6% | 177 |
| 42 | Saga | 788,000 | −0.88% | 0.6% | 323 |
| 43 | Fukui | 739,000 | −0.67% | 0.6% | 176 |
| 44 | Tokushima | 685,000 | −1.44% | 0.6% | 165 |
| 45 | Kochi | 656,000 | −1.50% | 0.5% | 92 |
| 46 | Shimane | 642,000 | −1.23% | 0.5% | 96 |
| 47 | Tottori | 531,000 | −1.12% | 0.4% | 151 |
Largest cities in Kumamoto
City proper, not the wider metro area; latest figure in GeoNames (CC BY 4.0), so years differ.
- Kumamoto738,907
- Kotō543,730
- Honmachi123,067
- Amakusa83,082
- Tamana64,292
- Kōshi61,772
Air quality in Kumamoto today
Hourly AQI and a 48-hour forecast.
Questions
What is the population of Kumamoto in 2026?
Is Kumamoto’s population growing or shrinking?
How does Kumamoto rank in Japan?
What is the population density of Kumamoto?
What is the largest city in Kumamoto?
Source and method
Statistics Bureau of Japan, Population Estimates. Reuse with credit under the e-Gov terms. Total area, Wikidata. Prefecture estimates are published in thousands each spring; results of the 2025 census will supersede them. Ranks, shares and changes are our arithmetic on the published figures. National figures can differ from the UN’s projection for Japan, which uses a different method. The 2026 figure above carries last year’s change forward; it does not come from the source.
Cite this page: Kumamoto population, Statistics Bureau of Japan, 1 October 2024. GlobeMetrics, https://globemetrics.org/world-population/japan/kumamoto/
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