Miyagi宮城県
Oosaki 大崎市
Data last updated:
Oosaki, Miyagi, Japan has a population of 118,528 (2025 national census). IPSS projections estimate 113,030 by 2030 and 87,340 by 2050 (a decrease of about 31.4% from 2020), with the share of residents aged 65+ rising from 30.5% in 2020 to 43.9%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
118,528
2030
(Projection)
113,030
▼ -11.2%
2040
(Projection)
100,619
▼ -21.0%
2050
(Projection)
87,340
▼ -31.4%
Change vs. 2020 census
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Other municipalities in Miyagi (宮城県)
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 | 130,266 | ▲ +2.3% | Census |
| 1985 | 133,439 | ▲ +4.8% | Census |
| 1990 | 135,208 | ▲ +6.2% | Census |
| 1995 | 138,068 | ▲ +8.4% | Census |
| 2000 | 139,313 | ▲ +9.4% | Census |
| 2005 | 138,491 | ▲ +8.8% | Census |
| 2010 | 135,147 | ▲ +6.1% | Census |
| 2015 | 133,391 | ▲ +4.8% | Census |
| 2020 | 127,330 | — | Census |
| 2025 | 118,528 | ▼ -6.9% | Census |
| 2030 | 113,030 | ▼ -11.2% | Projection |
| 2035 | 106,897 | ▼ -16.0% | Projection |
| 2040 | 100,619 | ▼ -21.0% | Projection |
| 2045 | 94,082 | ▼ -26.1% | Projection |
| 2050 | 87,340 | ▼ -31.4% | Projection |
About Oosaki
Overview
Oosaki (大崎市) is a municipality in Miyagi, Japan, with a population of 118,528 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 113,030 by 2030 (-11.2%), 100,619 by 2040 (-21.0%), and 87,340 by 2050 (-31.4%). 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 30.5% as of 2020 and is projected to rise to 43.9% 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 #1014 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #956 out of 1903 nationwide.
- Population size: Ranked #344 out of 1917 nationwide.
- Related: National rankings / All municipalities in Miyagi
Earnings in Miyagi (宮城県): Average salary in Miyagi (宮城県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure