Kochi高知県
Ochi 越知町
Data last updated:
Ochi, Kochi, Japan has a population of 4,440 (2025 national census). IPSS projections estimate 4,150 by 2030 and 2,521 by 2050 (a decrease of about 51.4% from 2020), with the share of residents aged 65+ rising from 47.1% in 2020 to 57.4%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025년
(실적)
4,440명
2030년
(추계)
4,150명
▼ -20.0%
2040년
(추계)
3,287명
▼ -36.6%
2050년
(추계)
2,521명
▼ -51.4%
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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Ochi 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 | 9,052 | ▲ +74.5% | Census |
| 1985 | 8,754 | ▲ +68.8% | Census |
| 1990 | 8,234 | ▲ +58.7% | Census |
| 1995 | 7,803 | ▲ +50.4% | Census |
| 2000 | 7,411 | ▲ +42.9% | Census |
| 2005 | 6,952 | ▲ +34.0% | Census |
| 2010 | 6,374 | ▲ +22.9% | Census |
| 2015 | 5,795 | ▲ +11.7% | Census |
| 2020 | 5,187 | — | Census |
| 2025 | 4,440 | ▼ -14.4% | Census |
| 2030 | 4,150 | ▼ -20.0% | Projection |
| 2035 | 3,708 | ▼ -28.5% | Projection |
| 2040 | 3,287 | ▼ -36.6% | Projection |
| 2045 | 2,888 | ▼ -44.3% | Projection |
| 2050 | 2,521 | ▼ -51.4% | Projection |
About Ochi
Overview
Ochi (越知町) is a municipality in Kochi, Japan, with a population of 4,440 as of 2025.
Population Projection of Ochi
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Ochi's population is expected to reach 4,150 by 2030 (-20.0%), 3,287 by 2040 (-36.6%), and 2,521 by 2050 (-51.4%). The town is projected to lose more than half its population over 30 years.
Aging Rate of Ochi
The aging rate (percentage of residents aged 65 and over) is 47.1% as of 2020 and is projected to rise to 57.4% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Ochi is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #281 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #186 out of 1903 nationwide.
- Population size: Ranked #1624 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