Tochigi栃木県
Kaminokawa 上三川町
Data last updated:
Kaminokawa, Tochigi, Japan has a population of 29,737 (2025 national census). IPSS projections estimate 29,037 by 2030 and 23,977 by 2050 (a decrease of about 22.2% from 2020), with the share of residents aged 65+ rising from 23.7% in 2020 to 39.1%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025Census
29,737
2030Projection
29,037
▼ -5.7%
2040Projection
26,743
▼ -13.2%
2050Projection
23,977
▼ -22.2%
Change vs. 2020 census
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Other municipalities in Tochigi (栃木県)
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.
Kaminokawa 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 | 24,597 | ▼ -20.2% | Census |
| 1985 | 25,229 | ▼ -18.1% | Census |
| 1990 | 27,300 | ▼ -11.4% | Census |
| 1995 | 27,700 | ▼ -10.1% | Census |
| 2000 | 29,421 | ▼ -4.5% | Census |
| 2005 | 31,592 | ▲ +2.6% | Census |
| 2010 | 31,621 | ▲ +2.6% | Census |
| 2015 | 31,046 | ▲ +0.8% | Census |
| 2020 | 30,806 | — | Census |
| 2025 | 29,737 | ▼ -3.5% | Census |
| 2030 | 29,037 | ▼ -5.7% | Projection |
| 2035 | 27,948 | ▼ -9.3% | Projection |
| 2040 | 26,743 | ▼ -13.2% | Projection |
| 2045 | 25,424 | ▼ -17.5% | Projection |
| 2050 | 23,977 | ▼ -22.2% | Projection |
About Kaminokawa
Overview
Kaminokawa (上三川町) is a municipality in Tochigi, Japan, with a population of 29,737 as of 2025.
Population Projection of Kaminokawa
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kaminokawa's population is expected to reach 29,037 by 2030 (-5.7%), 26,743 by 2040 (-13.2%), and 23,977 by 2050 (-22.2%). A significant population decline is projected over the next three decades.
Aging Rate of Kaminokawa
The aging rate (percentage of residents aged 65 and over) is 23.7% as of 2020 and is projected to rise to 39.1% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Kaminokawa's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1287 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1326 out of 1903 nationwide.
- Population size: Ranked #912 out of 1917 nationwide.
- Related: National rankings / All municipalities in Tochigi
Earnings in Tochigi (栃木県): Average salary in Tochigi (栃木県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure