Hokkaido北海道
Yoichi 余市町
Data last updated:
Yoichi, Hokkaido, Japan has a population of 16,464 (2025 national census). IPSS projections estimate 14,944 by 2030 and 9,569 by 2050 (a decrease of about 46.8% from 2020), with the share of residents aged 65+ rising from 40.5% in 2020 to 50.4%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
16,464
2030
(Projection)
14,944
▼ -17.0%
2040
(Projection)
12,109
▼ -32.7%
2050
(Projection)
9,569
▼ -46.8%
Change vs. 2020 census
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Other municipalities in Hokkaido (北海道)
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.
Yoichi 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 | 26,632 | ▲ +48.0% | Census |
| 1985 | 26,213 | ▲ +45.6% | Census |
| 1990 | 25,266 | ▲ +40.4% | Census |
| 1995 | 24,485 | ▲ +36.0% | Census |
| 2000 | 23,685 | ▲ +31.6% | Census |
| 2005 | 22,734 | ▲ +26.3% | Census |
| 2010 | 21,258 | ▲ +18.1% | Census |
| 2015 | 19,607 | ▲ +8.9% | Census |
| 2020 | 18,000 | — | Census |
| 2025 | 16,464 | ▼ -8.5% | Census |
| 2030 | 14,944 | ▼ -17.0% | Projection |
| 2035 | 13,502 | ▼ -25.0% | Projection |
| 2040 | 12,109 | ▼ -32.7% | Projection |
| 2045 | 10,781 | ▼ -40.1% | Projection |
| 2050 | 9,569 | ▼ -46.8% | Projection |
About Yoichi
Overview
Yoichi (余市町) is a municipality in Hokkaido, Japan, with a population of 16,464 as of 2025.
Population Projection of Yoichi
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Yoichi's population is expected to reach 14,944 by 2030 (-17.0%), 12,109 by 2040 (-32.7%), and 9,569 by 2050 (-46.8%). A significant population decline is projected over the next three decades.
Aging Rate of Yoichi
The aging rate (percentage of residents aged 65 and over) is 40.5% as of 2020 and is projected to rise to 50.4% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Yoichi is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #455 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #533 out of 1903 nationwide.
- Population size: Ranked #1149 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