Kagoshima鹿児島県
Oosaki 大崎町
Data last updated:
Oosaki, Kagoshima, Japan has a population of 11,177 (2025 national census). IPSS projections estimate 10,608 by 2030 and 7,513 by 2050 (a decrease of about 39.3% from 2020), with the share of residents aged 65+ rising from 39.4% in 2020 to 43.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
11,177
2030
(Projection)
10,608
▼ -14.3%
2040
(Projection)
9,003
▼ -27.3%
2050
(Projection)
7,513
▼ -39.3%
Change vs. 2020 census
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Other municipalities in Kagoshima (鹿児島県)
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.
Oosaki 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 | 17,527 | ▲ +41.5% | Census |
| 1985 | 17,689 | ▲ +42.8% | Census |
| 1990 | 16,828 | ▲ +35.9% | Census |
| 1995 | 16,480 | ▲ +33.1% | Census |
| 2000 | 16,018 | ▲ +29.3% | Census |
| 2005 | 15,303 | ▲ +23.6% | Census |
| 2010 | 14,215 | ▲ +14.8% | Census |
| 2015 | 13,241 | ▲ +6.9% | Census |
| 2020 | 12,385 | — | Census |
| 2025 | 11,177 | ▼ -9.8% | Census |
| 2030 | 10,608 | ▼ -14.3% | Projection |
| 2035 | 9,779 | ▼ -21.0% | Projection |
| 2040 | 9,003 | ▼ -27.3% | Projection |
| 2045 | 8,228 | ▼ -33.6% | Projection |
| 2050 | 7,513 | ▼ -39.3% | Projection |
About Oosaki
Overview
Oosaki (大崎町) is a municipality in Kagoshima, Japan, with a population of 11,177 as of 2025.
Population Projection of Oosaki
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Oosaki's population is expected to reach 10,608 by 2030 (-14.3%), 9,003 by 2040 (-27.3%), and 7,513 by 2050 (-39.3%). A significant population decline is projected over the next three decades.
Aging Rate of Oosaki
The aging rate (percentage of residents aged 65 and over) is 39.4% as of 2020 and is projected to rise to 43.8% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Oosaki's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #744 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #968 out of 1903 nationwide.
- Population size: Ranked #1306 out of 1917 nationwide.
- Related: National rankings / All municipalities in Kagoshima
Earnings in Kagoshima (鹿児島県): Average salary in Kagoshima (鹿児島県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure