Iwate岩手県
Oofunato 大船渡市
Data last updated:
Oofunato, Iwate, Japan has a population of 30,565 (2025 national census). IPSS projections estimate 29,297 by 2030 and 19,269 by 2050 (a decrease of about 44.5% from 2020), with the share of residents aged 65+ rising from 37.8% in 2020 to 50.6%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
30,565
2030
(Projection)
29,297
▼ -15.6%
2040
(Projection)
24,058
▼ -30.7%
2050
(Projection)
19,269
▼ -44.5%
Change vs. 2020 census
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Other municipalities in Iwate (岩手県)
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.
Oofunato 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 | 50,132 | ▲ +44.4% | Census |
| 1985 | 49,041 | ▲ +41.2% | Census |
| 1990 | 47,219 | ▲ +36.0% | Census |
| 1995 | 46,277 | ▲ +33.3% | Census |
| 2000 | 45,160 | ▲ +30.0% | Census |
| 2005 | 43,331 | ▲ +24.8% | Census |
| 2010 | 40,737 | ▲ +17.3% | Census |
| 2015 | 38,058 | ▲ +9.6% | Census |
| 2020 | 34,728 | — | Census |
| 2025 | 30,565 | ▼ -12.0% | Census |
| 2030 | 29,297 | ▼ -15.6% | Projection |
| 2035 | 26,638 | ▼ -23.3% | Projection |
| 2040 | 24,058 | ▼ -30.7% | Projection |
| 2045 | 21,620 | ▼ -37.7% | Projection |
| 2050 | 19,269 | ▼ -44.5% | Projection |
About Oofunato
Overview
Oofunato (大船渡市) is a municipality in Iwate, Japan, with a population of 30,565 as of 2025.
Population Projection of Oofunato
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Oofunato's population is expected to reach 29,297 by 2030 (-15.6%), 24,058 by 2040 (-30.7%), and 19,269 by 2050 (-44.5%). A significant population decline is projected over the next three decades.
Aging Rate of Oofunato
The aging rate (percentage of residents aged 65 and over) is 37.8% as of 2020 and is projected to rise to 50.6% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Oofunato is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #547 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #521 out of 1903 nationwide.
- Population size: Ranked #891 out of 1917 nationwide.
- Related: National rankings / All municipalities in Iwate
Earnings in Iwate (岩手県): Average salary in Iwate (岩手県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure