Hokkaido北海道
Betsukai 別海町
Data last updated:
Betsukai, Hokkaido, Japan has a population of 13,281 (2025 national census). IPSS projections estimate 12,663 by 2030 and 9,231 by 2050 (a decrease of about 35.8% from 2020), with the share of residents aged 65+ rising from 28.5% in 2020 to 39.6%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
13,281
2030
(Projection)
12,663
▼ -11.9%
2040
(Projection)
11,011
▼ -23.4%
2050
(Projection)
9,231
▼ -35.8%
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.
Betsukai 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 | 19,035 | ▲ +32.4% | Census |
| 1985 | 18,533 | ▲ +28.9% | Census |
| 1990 | 18,297 | ▲ +27.2% | Census |
| 1995 | 17,549 | ▲ +22.0% | Census |
| 2000 | 16,910 | ▲ +17.6% | Census |
| 2005 | 16,460 | ▲ +14.5% | Census |
| 2010 | 15,855 | ▲ +10.3% | Census |
| 2015 | 15,273 | ▲ +6.2% | Census |
| 2020 | 14,380 | — | Census |
| 2025 | 13,281 | ▼ -7.6% | Census |
| 2030 | 12,663 | ▼ -11.9% | Projection |
| 2035 | 11,850 | ▼ -17.6% | Projection |
| 2040 | 11,011 | ▼ -23.4% | Projection |
| 2045 | 10,129 | ▼ -29.6% | Projection |
| 2050 | 9,231 | ▼ -35.8% | Projection |
About Betsukai
Overview
Betsukai (別海町) is a municipality in Hokkaido, Japan, with a population of 13,281 as of 2025.
Population Projection of Betsukai
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Betsukai's population is expected to reach 12,663 by 2030 (-11.9%), 11,011 by 2040 (-23.4%), and 9,231 by 2050 (-35.8%). A significant population decline is projected over the next three decades.
Aging Rate of Betsukai
The aging rate (percentage of residents aged 65 and over) is 28.5% as of 2020 and is projected to rise to 39.6% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Betsukai's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #866 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1293 out of 1903 nationwide.
- Population size: Ranked #1237 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