Kumamoto熊本県
Nishihara 西原村
Data last updated:
Nishihara, Kumamoto, Japan has a population of 6,826 (2025 national census). IPSS projections estimate 6,367 by 2030 and 6,013 by 2050 (a decrease of about 6.4% from 2020), with the share of residents aged 65+ rising from 31.5% in 2020 to 43.3%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
6,826
2030
(Projection)
6,367
▼ -0.9%
2040
(Projection)
6,254
▼ -2.7%
2050
(Projection)
6,013
▼ -6.4%
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.
Nishihara 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 | 4,824 | ▼ -24.9% | Census |
| 1985 | 4,921 | ▼ -23.4% | Census |
| 1990 | 5,024 | ▼ -21.8% | Census |
| 1995 | 5,144 | ▼ -20.0% | Census |
| 2000 | 5,728 | ▼ -10.9% | Census |
| 2005 | 6,352 | ▼ -1.2% | Census |
| 2010 | 6,792 | ▲ +5.7% | Census |
| 2015 | 6,802 | ▲ +5.9% | Census |
| 2020 | 6,426 | — | Census |
| 2025 | 6,826 | ▲ +6.2% | Census |
| 2030 | 6,367 | ▼ -0.9% | Projection |
| 2035 | 6,318 | ▼ -1.7% | Projection |
| 2040 | 6,254 | ▼ -2.7% | Projection |
| 2045 | 6,164 | ▼ -4.1% | Projection |
| 2050 | 6,013 | ▼ -6.4% | Projection |
About Nishihara
Overview
Nishihara (西原村) is a municipality in Kumamoto, Japan, with a population of 6,826 as of 2025.
Population Projection of Nishihara
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Nishihara's population is expected to reach 6,367 by 2030 (-0.9%), 6,254 by 2040 (-2.7%), and 6,013 by 2050 (-6.4%). A modest population change is expected.
Aging Rate of Nishihara
The aging rate (percentage of residents aged 65 and over) is 31.5% as of 2020 and is projected to rise to 43.3% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Nishihara's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1689 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1001 out of 1903 nationwide.
- Population size: Ranked #1482 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