Chiba千葉県
Sanmu 山武市
Data last updated:
2020
(Census)
48,462
2030
(Projection)
41,647
▼ -14.1%
2040
(Projection)
34,396
▼ -29.0%
2050
(Projection)
27,339
▼ -43.6%
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.
About Sanmu
Overview
Sanmu (山武市) is a municipality in Chiba, Japan, with a population of 48,462 as of 2020.
Population Projection
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Sanmu's population is expected to reach 41,647 by 2030 (-14.1%), 34,396 by 2040 (-29.0%), and 27,339 by 2050 (-43.6%). A significant population decline is projected over the next three decades.
Aging Outlook
The aging rate (percentage of residents aged 65 and over) is 35.9% as of 2020 and is projected to rise to 53.9% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Sanmu is experiencing one of the faster rates of population decline in Japan.