Tokushima徳島県
Sanagouchi 佐那河内村
Data last updated:
Sanagouchi, Tokushima, Japan has a population of 1,863 (2025 national census). IPSS projections estimate 1,620 by 2030 and 877 by 2050 (a decrease of about 57.4% from 2020), with the share of residents aged 65+ rising from 47.9% in 2020 to 63.5%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
1,863
2030
(Projection)
1,620
▼ -21.3%
2040
(Projection)
1,212
▼ -41.1%
2050
(Projection)
877
▼ -57.4%
Change vs. 2020 census
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Other municipalities in Tokushima (徳島県)
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.
Sanagouchi 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 | 3,828 | ▲ +86.0% | Census |
| 1985 | 3,644 | ▲ +77.1% | Census |
| 1990 | 3,467 | ▲ +68.5% | Census |
| 1995 | 3,245 | ▲ +57.7% | Census |
| 2000 | 3,016 | ▲ +46.6% | Census |
| 2005 | 2,800 | ▲ +36.1% | Census |
| 2010 | 2,588 | ▲ +25.8% | Census |
| 2015 | 2,289 | ▲ +11.2% | Census |
| 2020 | 2,058 | — | Census |
| 2025 | 1,863 | ▼ -9.5% | Census |
| 2030 | 1,620 | ▼ -21.3% | Projection |
| 2035 | 1,416 | ▼ -31.2% | Projection |
| 2040 | 1,212 | ▼ -41.1% | Projection |
| 2045 | 1,036 | ▼ -49.7% | Projection |
| 2050 | 877 | ▼ -57.4% | Projection |
About Sanagouchi
Overview
Sanagouchi (佐那河内村) is a municipality in Tokushima, Japan, with a population of 1,863 as of 2025.
Population Projection of Sanagouchi
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Sanagouchi's population is expected to reach 1,620 by 2030 (-21.3%), 1,212 by 2040 (-41.1%), and 877 by 2050 (-57.4%). The town is projected to lose more than half its population over 30 years.
Aging Rate of Sanagouchi
The aging rate (percentage of residents aged 65 and over) is 47.9% as of 2020 and is projected to rise to 63.5% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Sanagouchi is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #116 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #46 out of 1903 nationwide.
- Population size: Ranked #1817 out of 1917 nationwide.
- Related: National rankings / All municipalities in Tokushima
Earnings in Tokushima (徳島県): Average salary in Tokushima (徳島県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure