Hokkaido北海道
Oozora 大空町
Data last updated:
Oozora, Hokkaido, Japan has a population of 6,204 (2025 national census). IPSS projections estimate 5,648 by 2030 and 3,691 by 2050 (a decrease of about 45.5% from 2020), with the share of residents aged 65+ rising from 37.0% in 2020 to 49.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
6,204
2030
(Projection)
5,648
▼ -16.6%
2040
(Projection)
4,638
▼ -31.5%
2050
(Projection)
3,691
▼ -45.5%
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.
Oozora 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 | 9,565 | ▲ +41.2% | Census |
| 1985 | 9,429 | ▲ +39.2% | Census |
| 1990 | 9,238 | ▲ +36.4% | Census |
| 1995 | 8,992 | ▲ +32.7% | Census |
| 2000 | 8,946 | ▲ +32.0% | Census |
| 2005 | 8,392 | ▲ +23.9% | Census |
| 2010 | 7,933 | ▲ +17.1% | Census |
| 2015 | 7,360 | ▲ +8.6% | Census |
| 2020 | 6,775 | — | Census |
| 2025 | 6,204 | ▼ -8.4% | Census |
| 2030 | 5,648 | ▼ -16.6% | Projection |
| 2035 | 5,132 | ▼ -24.3% | Projection |
| 2040 | 4,638 | ▼ -31.5% | Projection |
| 2045 | 4,156 | ▼ -38.7% | Projection |
| 2050 | 3,691 | ▼ -45.5% | Projection |
About Oozora
Overview
Oozora (大空町) is a municipality in Hokkaido, Japan, with a population of 6,204 as of 2025.
Population Projection of Oozora
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Oozora's population is expected to reach 5,648 by 2030 (-16.6%), 4,638 by 2040 (-31.5%), and 3,691 by 2050 (-45.5%). A significant population decline is projected over the next three decades.
Aging Rate of Oozora
The aging rate (percentage of residents aged 65 and over) is 37.0% as of 2020 and is projected to rise to 49.8% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Oozora is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #509 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #574 out of 1903 nationwide.
- Population size: Ranked #1512 out of 1917 nationwide.
- Related: National rankings / All municipalities in Hokkaido
Earnings in Hokkaido (北海道): Average salary in Hokkaido (北海道) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure