Oita大分県
Usuki 臼杵市
Data last updated:
Usuki, Oita, Japan has a population of 32,685 (2025 national census). IPSS projections estimate 29,907 by 2030 and 19,842 by 2050 (a decrease of about 45.1% from 2020), with the share of residents aged 65+ rising from 41.1% in 2020 to 51.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025年
(实际)
32,685人
2030年
(预测)
29,907人
▼ -17.3%
2040年
(预测)
24,535人
▼ -32.1%
2050年
(预测)
19,842人
▼ -45.1%
Change vs. 2020 census
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Oita (大分県)的其他市区町村
数据来源
- 日本政府统计综合窗口(e-Stat)（https://www.e-stat.go.jp/）
- 国立社会保障・人口问题研究所「日本地区别未来推计人口（令和5年推计）」
※本服务使用e-Stat的API功能，但服务内容不受日本政府保证。
Usuki 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 | 51,302 | ▲ +41.9% | Census |
| 1985 | 51,086 | ▲ +41.3% | Census |
| 1990 | 48,754 | ▲ +34.8% | Census |
| 1995 | 46,830 | ▲ +29.5% | Census |
| 2000 | 45,486 | ▲ +25.8% | Census |
| 2005 | 43,352 | ▲ +19.9% | Census |
| 2010 | 41,469 | ▲ +14.7% | Census |
| 2015 | 38,748 | ▲ +7.2% | Census |
| 2020 | 36,158 | — | Census |
| 2025 | 32,685 | ▼ -9.6% | Census |
| 2030 | 29,907 | ▼ -17.3% | Projection |
| 2035 | 27,161 | ▼ -24.9% | Projection |
| 2040 | 24,535 | ▼ -32.1% | Projection |
| 2045 | 22,088 | ▼ -38.9% | Projection |
| 2050 | 19,842 | ▼ -45.1% | Projection |
About Usuki
Overview
Usuki (臼杵市) is a municipality in Oita, Japan, with a population of 32,685 as of 2025.
Population Projection of Usuki
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Usuki's population is expected to reach 29,907 by 2030 (-17.3%), 24,535 by 2040 (-32.1%), and 19,842 by 2050 (-45.1%). A significant population decline is projected over the next three decades.
Aging Rate of Usuki
The aging rate (percentage of residents aged 65 and over) is 41.1% as of 2020 and is projected to rise to 51.8% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Usuki is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #528 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #439 out of 1903 nationwide.
- Population size: Ranked #857 out of 1917 nationwide.
- Related: National rankings / All municipalities in Oita
Oita (大分県)的收入水平: Oita (大分県)的平均年收入（按年龄、性别、企业规模）jpsalary / 厚生劳动省 工资结构基本统计调查