Kumamoto熊本県
Ubuyama 産山村
Data last updated:
Ubuyama, Kumamoto, Japan has a population of 1,190 (2025 national census). IPSS projections estimate 1,115 by 2030 and 750 by 2050 (a decrease of about 45.7% from 2020), with the share of residents aged 65+ rising from 42.8% in 2020 to 54.3%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
1,190
2030
(Projection)
1,115
▼ -19.3%
2040
(Projection)
918
▼ -33.6%
2050
(Projection)
750
▼ -45.7%
Change vs. 2020 census
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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.
Ubuyama 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 | 1,981 | ▲ +43.3% | Census |
| 1985 | 1,878 | ▲ +35.9% | Census |
| 1990 | 1,856 | ▲ +34.3% | Census |
| 1995 | 1,885 | ▲ +36.4% | Census |
| 2000 | 1,824 | ▲ +32.0% | Census |
| 2005 | 1,708 | ▲ +23.6% | Census |
| 2010 | 1,606 | ▲ +16.2% | Census |
| 2015 | 1,510 | ▲ +9.3% | Census |
| 2020 | 1,382 | — | Census |
| 2025 | 1,190 | ▼ -13.9% | Census |
| 2030 | 1,115 | ▼ -19.3% | Projection |
| 2035 | 1,015 | ▼ -26.6% | Projection |
| 2040 | 918 | ▼ -33.6% | Projection |
| 2045 | 832 | ▼ -39.8% | Projection |
| 2050 | 750 | ▼ -45.7% | Projection |
About Ubuyama
Overview
Ubuyama (産山村) is a municipality in Kumamoto, Japan, with a population of 1,190 as of 2025.
Population Projection of Ubuyama
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Ubuyama's population is expected to reach 1,115 by 2030 (-19.3%), 918 by 2040 (-33.6%), and 750 by 2050 (-45.7%). A significant population decline is projected over the next three decades.
Aging Rate of Ubuyama
The aging rate (percentage of residents aged 65 and over) is 42.8% as of 2020 and is projected to rise to 54.3% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Ubuyama is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #505 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #309 out of 1903 nationwide.
- Population size: Ranked #1861 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