Mie三重県
Oodai 大台町
Data last updated:
Oodai, Mie, Japan has a population of 7,777 (2025 national census). IPSS projections estimate 6,989 by 2030 and 4,284 by 2050 (a decrease of about 50.6% from 2020), with the share of residents aged 65+ rising from 43.4% in 2020 to 54.5%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
7,777
2030
(Projection)
6,989
▼ -19.4%
2040
(Projection)
5,533
▼ -36.2%
2050
(Projection)
4,284
▼ -50.6%
Change vs. 2020 census
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Other municipalities in Mie (三重県)
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.
Oodai 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 | 13,172 | ▲ +52.0% | Census |
| 1985 | 12,982 | ▲ +49.8% | Census |
| 1990 | 12,144 | ▲ +40.1% | Census |
| 1995 | 11,758 | ▲ +35.6% | Census |
| 2000 | 11,399 | ▲ +31.5% | Census |
| 2005 | 11,099 | ▲ +28.0% | Census |
| 2010 | 10,416 | ▲ +20.2% | Census |
| 2015 | 9,557 | ▲ +10.3% | Census |
| 2020 | 8,668 | — | Census |
| 2025 | 7,777 | ▼ -10.3% | Census |
| 2030 | 6,989 | ▼ -19.4% | Projection |
| 2035 | 6,241 | ▼ -28.0% | Projection |
| 2040 | 5,533 | ▼ -36.2% | Projection |
| 2045 | 4,890 | ▼ -43.6% | Projection |
| 2050 | 4,284 | ▼ -50.6% | Projection |
About Oodai
Overview
Oodai (大台町) is a municipality in Mie, Japan, with a population of 7,777 as of 2025.
Population Projection of Oodai
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Oodai's population is expected to reach 6,989 by 2030 (-19.4%), 5,533 by 2040 (-36.2%), and 4,284 by 2050 (-50.6%). The town is projected to lose more than half its population over 30 years.
Aging Rate of Oodai
The aging rate (percentage of residents aged 65 and over) is 43.4% as of 2020 and is projected to rise to 54.5% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Oodai is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #322 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #302 out of 1903 nationwide.
- Population size: Ranked #1435 out of 1917 nationwide.
- Related: National rankings / All municipalities in Mie
Earnings in Mie (三重県): Average salary in Mie (三重県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure