Shizuoka静岡県
Minamiizu 南伊豆町
Data last updated:
Minamiizu, Shizuoka, Japan has a population of 6,997 (2025 national census). IPSS projections estimate 6,580 by 2030 and 4,410 by 2050 (a decrease of about 44.0% from 2020), with the share of residents aged 65+ rising from 49.2% in 2020 to 56.4%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
6,997
2030
(Projection)
6,580
▼ -16.5%
2040
(Projection)
5,417
▼ -31.2%
2050
(Projection)
4,410
▼ -44.0%
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.
Minamiizu 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 | 11,722 | ▲ +48.8% | Census |
| 1985 | 11,573 | ▲ +46.9% | Census |
| 1990 | 11,200 | ▲ +42.2% | Census |
| 1995 | 10,725 | ▲ +36.2% | Census |
| 2000 | 10,304 | ▲ +30.8% | Census |
| 2005 | 10,003 | ▲ +27.0% | Census |
| 2010 | 9,516 | ▲ +20.8% | Census |
| 2015 | 8,524 | ▲ +8.2% | Census |
| 2020 | 7,877 | — | Census |
| 2025 | 6,997 | ▼ -11.2% | Census |
| 2030 | 6,580 | ▼ -16.5% | Projection |
| 2035 | 5,986 | ▼ -24.0% | Projection |
| 2040 | 5,417 | ▼ -31.2% | Projection |
| 2045 | 4,878 | ▼ -38.1% | Projection |
| 2050 | 4,410 | ▼ -44.0% | Projection |
About Minamiizu
Overview
Minamiizu (南伊豆町) is a municipality in Shizuoka, Japan, with a population of 6,997 as of 2025.
Population Projection of Minamiizu
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Minamiizu's population is expected to reach 6,580 by 2030 (-16.5%), 5,417 by 2040 (-31.2%), and 4,410 by 2050 (-44.0%). A significant population decline is projected over the next three decades.
Aging Rate of Minamiizu
The aging rate (percentage of residents aged 65 and over) is 49.2% as of 2020 and is projected to rise to 56.4% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Minamiizu is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #566 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #224 out of 1903 nationwide.
- Population size: Ranked #1473 out of 1917 nationwide.
- Related: National rankings / All municipalities in Shizuoka
Earnings in Shizuoka (静岡県): Average salary in Shizuoka (静岡県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure