Yamagata山形県
Kawanishi 川西町
Data last updated:
Kawanishi, Yamagata, Japan has a population of 12,942 (2025 national census). IPSS projections estimate 11,636 by 2030 and 7,107 by 2050 (a decrease of about 51.2% from 2020), with the share of residents aged 65+ rising from 39.0% in 2020 to 52.5%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
12,942
2030
(Projection)
11,636
▼ -20.1%
2040
(Projection)
9,253
▼ -36.4%
2050
(Projection)
7,107
▼ -51.2%
Change vs. 2020 census
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Other municipalities in Yamagata (山形県)
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.
Kawanishi 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 | 22,423 | ▲ +54.0% | Census |
| 1985 | 22,205 | ▲ +52.5% | Census |
| 1990 | 21,548 | ▲ +48.0% | Census |
| 1995 | 20,764 | ▲ +42.6% | Census |
| 2000 | 19,688 | ▲ +35.2% | Census |
| 2005 | 18,769 | ▲ +28.9% | Census |
| 2010 | 17,313 | ▲ +18.9% | Census |
| 2015 | 15,751 | ▲ +8.2% | Census |
| 2020 | 14,558 | — | Census |
| 2025 | 12,942 | ▼ -11.1% | Census |
| 2030 | 11,636 | ▼ -20.1% | Projection |
| 2035 | 10,402 | ▼ -28.5% | Projection |
| 2040 | 9,253 | ▼ -36.4% | Projection |
| 2045 | 8,153 | ▼ -44.0% | Projection |
| 2050 | 7,107 | ▼ -51.2% | Projection |
About Kawanishi
Overview
Kawanishi (川西町) is a municipality in Yamagata, Japan, with a population of 12,942 as of 2025.
Population Projection of Kawanishi
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kawanishi's population is expected to reach 11,636 by 2030 (-20.1%), 9,253 by 2040 (-36.4%), and 7,107 by 2050 (-51.2%). The town is projected to lose more than half its population over 30 years.
Aging Rate of Kawanishi
The aging rate (percentage of residents aged 65 and over) is 39.0% as of 2020 and is projected to rise to 52.5% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Kawanishi is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #291 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #396 out of 1903 nationwide.
- Population size: Ranked #1246 out of 1917 nationwide.
- Related: National rankings / All municipalities in Yamagata
Earnings in Yamagata (山形県): Average salary in Yamagata (山形県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure