Chiba千葉県
Yachimata 八街市
Data last updated:
Yachimata, Chiba, Japan has a population of 64,489 (2025 national census). IPSS projections estimate 60,200 by 2030 and 42,276 by 2050 (a decrease of about 37.3% from 2020), with the share of residents aged 65+ rising from 31.3% in 2020 to 50.0%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025年
(实际)
64,489人
2030年
(预测)
60,200人
▼ -10.8%
2040年
(预测)
51,413人
▼ -23.8%
2050年
(预测)
42,276人
▼ -37.3%
Change vs. 2020 census
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Chiba (千葉県)的其他市区町村
数据来源
- 日本政府统计综合窗口(e-Stat)（https://www.e-stat.go.jp/）
- 国立社会保障・人口问题研究所「日本地区别未来推计人口（令和5年推计）」
※本服务使用e-Stat的API功能，但服务内容不受日本政府保证。
Yachimata 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 | 31,939 | ▼ -52.7% | Census |
| 1985 | 37,532 | ▼ -44.4% | Census |
| 1990 | 50,036 | ▼ -25.8% | Census |
| 1995 | 65,218 | ▼ -3.3% | Census |
| 2000 | 72,595 | ▲ +7.6% | Census |
| 2005 | 75,735 | ▲ +12.3% | Census |
| 2010 | 73,212 | ▲ +8.5% | Census |
| 2015 | 70,734 | ▲ +4.9% | Census |
| 2020 | 67,455 | — | Census |
| 2025 | 64,489 | ▼ -4.4% | Census |
| 2030 | 60,200 | ▼ -10.8% | Projection |
| 2035 | 55,943 | ▼ -17.1% | Projection |
| 2040 | 51,413 | ▼ -23.8% | Projection |
| 2045 | 46,766 | ▼ -30.7% | Projection |
| 2050 | 42,276 | ▼ -37.3% | Projection |
About Yachimata
Overview
Yachimata (八街市) is a municipality in Chiba, Japan, with a population of 64,489 as of 2025.
Population Projection of Yachimata
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Yachimata's population is expected to reach 60,200 by 2030 (-10.8%), 51,413 by 2040 (-23.8%), and 42,276 by 2050 (-37.3%). A significant population decline is projected over the next three decades.
Aging Rate of Yachimata
The aging rate (percentage of residents aged 65 and over) is 31.3% as of 2020 and is projected to rise to 50.0% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Yachimata's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #816 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #560 out of 1903 nationwide.
- Population size: Ranked #579 out of 1917 nationwide.
- Related: National rankings / All municipalities in Chiba
Chiba (千葉県)的收入水平: Chiba (千葉県)的平均年收入（按年龄、性别、企业规模）jpsalary / 厚生劳动省 工资结构基本统计调查