日本人口减少模拟器

Gunma群馬県

Shimonita 下仁田町

Data last updated:

Shimonita, Gunma, Japan has a population of 5,492 (2025 national census). IPSS projections estimate 4,816 by 2030 and 2,268 by 2050 (a decrease of about 65.5% from 2020), with the share of residents aged 65+ rising from 50.8% in 2020 to 67.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025年

(实际)

5,492人

2030年

(预测)

4,816人

▼ -26.8%

2040年

(预测)

3,403人

▼ -48.3%

2050年

(预测)

2,268人

▼ -65.5%

Change vs. 2020 census

老龄化率(65岁以上): 2020年 50.8%→2050年 67.8%

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岁

Gunma (群馬県)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。

Shimonita Population Table (1980–2050)

Population by year: national census results (restated to current municipal boundaries) and IPSS (2023) projections based on the 2020 census.

YearPopulationvs 2020Type
198015,228▲ +131.6%Census
198514,237▲ +116.5%Census
199013,683▲ +108.1%Census
199512,266▲ +86.5%Census
200011,171▲ +69.9%Census
200510,144▲ +54.3%Census
20108,911▲ +35.5%Census
20157,564▲ +15.0%Census
20206,576—Census
20255,492▼ -16.5%Census
20304,816▼ -26.8%Projection
20354,077▼ -38.0%Projection
20403,403▼ -48.3%Projection
20452,800▼ -57.4%Projection
20502,268▼ -65.5%Projection

About Shimonita

Overview

Shimonita (下仁田町) is a municipality in Gunma, Japan, with a population of 5,492 as of 2025.

Population Projection of Shimonita

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Shimonita's population is expected to reach 4,816 by 2030 (-26.8%), 3,403 by 2040 (-48.3%), and 2,268 by 2050 (-65.5%). The town is projected to lose more than half its population over 30 years.

Aging Rate of Shimonita

The aging rate (percentage of residents aged 65 and over) is 50.8% as of 2020 and is projected to rise to 67.8% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.

National Comparison

Shimonita is among the most rapidly declining municipalities in Japan.

National and Prefectural Rank

  • Population decline rate: Ranked #25 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #16 out of 1903 nationwide.
  • Population size: Ranked #1566 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Gunma

Gunma (群馬県)的收入水平: Gunma (群馬県)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

Frequently Asked Questions

Q.What is the current population of Shimonita, Gunma?
A.According to the 2025 national census, Shimonita has a population of 5,492.
Q.What is the population of Shimonita in 2026?
A.Shimonita's population in 2026 is estimated at approximately 5,357. This is an interpolated reference value between the 2025 census (5,492) and the IPSS projection for 2030 (4,816).
Q.What is the projected population of Shimonita in the future?
A.According to IPSS projections, Shimonita's population is expected to be 4,816 in 2030, 3,403 in 2040, and 2,268 in 2050.
Q.What is the population decline rate of Shimonita?
A.Over the 30 years from 2020 to 2050, Shimonita's population is projected to change by -65.5%. The 10-year change is -26.8% and the 20-year change is -48.3%.
Q.Why is the population of Shimonita declining?
A.Nationwide, Japan's population decline is driven by natural decrease (deaths exceeding births) and, in regional municipalities, by net out-migration of young people to major metropolitan areas. In Shimonita, the share of residents aged 65+ is projected to rise from 50.8% to 67.8% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Shimonita?
A.Shimonita's aging rate (percentage aged 65 and over) is 50.8% as of 2020, projected to rise to 67.8% by 2050.
Q.Where does this population data come from?
A.Historical data is sourced from Japan's national census via the e-Stat API (Statistics Bureau of Japan). Future projections are from the National Institute of Population and Social Security Research (IPSS) "Regional Population Projections 2023".
Q.Is the data up to date?
A.Historical data uses national census results through 2025. Future projections use the IPSS 2023 edition, which is based on the 2020 census.

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