Chiba千葉県
Kamagaya 鎌ケ谷市
Data last updated:
Kamagaya, Chiba, Japan has a population of 109,081 (2025 national census). IPSS projections estimate 108,254 by 2030 and 103,245 by 2050 (a decrease of about 6.1% from 2020), with the share of residents aged 65+ rising from 29.4% in 2020 to 36.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
109,081
2030
(Projection)
108,254
▼ -1.5%
2040
(Projection)
105,704
▼ -3.8%
2050
(Projection)
103,245
▼ -6.1%
Change vs. 2020 census
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Other municipalities in Chiba (千葉県)
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.
Kamagaya 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 | 76,157 | ▼ -30.7% | Census |
| 1985 | 85,705 | ▼ -22.0% | Census |
| 1990 | 95,052 | ▼ -13.5% | Census |
| 1995 | 99,694 | ▼ -9.3% | Census |
| 2000 | 102,573 | ▼ -6.7% | Census |
| 2005 | 102,812 | ▼ -6.5% | Census |
| 2010 | 107,853 | ▼ -1.9% | Census |
| 2015 | 108,917 | ▼ -0.9% | Census |
| 2020 | 109,932 | — | Census |
| 2025 | 109,081 | ▼ -0.8% | Census |
| 2030 | 108,254 | ▼ -1.5% | Projection |
| 2035 | 107,091 | ▼ -2.6% | Projection |
| 2040 | 105,704 | ▼ -3.8% | Projection |
| 2045 | 104,399 | ▼ -5.0% | Projection |
| 2050 | 103,245 | ▼ -6.1% | Projection |
About Kamagaya
Overview
Kamagaya (鎌ケ谷市) is a municipality in Chiba, Japan, with a population of 109,081 as of 2025.
Population Projection of Kamagaya
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kamagaya's population is expected to reach 108,254 by 2030 (-1.5%), 105,704 by 2040 (-3.8%), and 103,245 by 2050 (-6.1%). A modest population change is expected.
Aging Rate of Kamagaya
The aging rate (percentage of residents aged 65 and over) is 29.4% as of 2020 and is projected to rise to 36.8% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Kamagaya's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1695 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1492 out of 1903 nationwide.
- Population size: Ranked #386 out of 1917 nationwide.
- Related: National rankings / All municipalities in Chiba
Earnings in Chiba (千葉県): Average salary in Chiba (千葉県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure