Kumamoto熊本県
Kumamoto 熊本市
Data last updated:
Kumamoto, Kumamoto, Japan has a population of 730,882 (2025 national census). IPSS projections estimate 720,627 by 2030 and 648,196 by 2050 (a decrease of about 12.3% from 2020), with the share of residents aged 65+ rising from 26.4% in 2020 to 35.7%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
730,882
2030
(Projection)
720,627
▼ -2.5%
2040
(Projection)
689,390
▼ -6.7%
2050
(Projection)
648,196
▼ -12.3%
Change vs. 2020 census
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Other municipalities in Kumamoto (熊本県)
Data Sources
- Portal Site of Official Statistics of Japan (e-Stat)（https://www.e-stat.go.jp/）
- National Institute of Population and Social Security Research (IPSS), Regional Population Projections (2023 ed.)
* This service uses the e-Stat API but its content is not guaranteed by the Japanese government.
Kumamoto Population Table (1980–2050)
Population by year: national census results (restated to current municipal boundaries) and IPSS (2023) projections based on the 2020 census.
| Year | Population | vs 2020 | Type |
|---|---|---|---|
| 1980 | 619,236 | ▼ -16.2% | Census |
| 1985 | 654,348 | ▼ -11.4% | Census |
| 1990 | 680,765 | ▼ -7.9% | Census |
| 1995 | 708,097 | ▼ -4.2% | Census |
| 2000 | 720,816 | ▼ -2.4% | Census |
| 2005 | 727,978 | ▼ -1.5% | Census |
| 2010 | 734,474 | ▼ -0.6% | Census |
| 2015 | 740,822 | ▲ +0.3% | Census |
| 2020 | 738,865 | — | Census |
| 2025 | 730,882 | ▼ -1.1% | Census |
| 2030 | 720,627 | ▼ -2.5% | Projection |
| 2035 | 706,430 | ▼ -4.4% | Projection |
| 2040 | 689,390 | ▼ -6.7% | Projection |
| 2045 | 669,499 | ▼ -9.4% | Projection |
| 2050 | 648,196 | ▼ -12.3% | Projection |
About Kumamoto
Overview
Kumamoto (熊本市) is a municipality in Kumamoto, Japan, with a population of 730,882 as of 2025.
Population Projection of Kumamoto
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kumamoto's population is expected to reach 720,627 by 2030 (-2.5%), 689,390 by 2040 (-6.7%), and 648,196 by 2050 (-12.3%). A modest population change is expected.
Aging Rate of Kumamoto
The aging rate (percentage of residents aged 65 and over) is 26.4% as of 2020 and is projected to rise to 35.7% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Kumamoto's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1559 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1569 out of 1903 nationwide.
- Population size: Ranked #21 out of 1917 nationwide.
- Related: National rankings / All municipalities in Kumamoto
Earnings in Kumamoto (熊本県): Average salary in Kumamoto (熊本県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure