Kochi高知県
Shimanto 四万十市
Data last updated:
Shimanto, Kochi, Japan has a population of 30,452 (2025 national census). IPSS projections estimate 28,596 by 2030 and 20,436 by 2050 (a decrease of about 37.5% from 2020), with the share of residents aged 65+ rising from 37.1% in 2020 to 49.2%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025년
(실적)
30,452명
2030년
(추계)
28,596명
▼ -12.5%
2040년
(추계)
24,476명
▼ -25.1%
2050년
(추계)
20,436명
▼ -37.5%
Change vs. 2020 census
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Kochi (高知県)의 다른 시구정촌
데이터 출처
- 일본 정부 통계 종합 포털(e-Stat)（https://www.e-stat.go.jp/）
- 국립사회보장・인구문제연구소 「일본의 지역별 장래추계인구(레이와 5년 추계)」
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Shimanto 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 | 40,315 | ▲ +23.3% | Census |
| 1985 | 40,609 | ▲ +24.2% | Census |
| 1990 | 40,066 | ▲ +22.5% | Census |
| 1995 | 38,991 | ▲ +19.3% | Census |
| 2000 | 38,784 | ▲ +18.6% | Census |
| 2005 | 37,917 | ▲ +16.0% | Census |
| 2010 | 35,933 | ▲ +9.9% | Census |
| 2015 | 34,313 | ▲ +5.0% | Census |
| 2020 | 32,694 | — | Census |
| 2025 | 30,452 | ▼ -6.9% | Census |
| 2030 | 28,596 | ▼ -12.5% | Projection |
| 2035 | 26,526 | ▼ -18.9% | Projection |
| 2040 | 24,476 | ▼ -25.1% | Projection |
| 2045 | 22,410 | ▼ -31.5% | Projection |
| 2050 | 20,436 | ▼ -37.5% | Projection |
About Shimanto
Overview
Shimanto (四万十市) is a municipality in Kochi, Japan, with a population of 30,452 as of 2025.
Population Projection of Shimanto
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Shimanto's population is expected to reach 28,596 by 2030 (-12.5%), 24,476 by 2040 (-25.1%), and 20,436 by 2050 (-37.5%). A significant population decline is projected over the next three decades.
Aging Rate of Shimanto
The aging rate (percentage of residents aged 65 and over) is 37.1% as of 2020 and is projected to rise to 49.2% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Shimanto's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #810 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #614 out of 1903 nationwide.
- Population size: Ranked #894 out of 1917 nationwide.
- Related: National rankings / All municipalities in Kochi
Kochi (高知県)의 소득 수준: Kochi (高知県)의 평균 연봉(연령·성별·기업 규모별)jpsalary / 후생노동성 임금구조 기본통계조사