日本人口减少模拟器

Nara奈良県

Shimoichi 下市町

Data last updated:

Shimoichi, Nara, Japan has a population of 4,110 (2025 national census). IPSS projections estimate 3,678 by 2030 and 1,737 by 2050 (a decrease of about 65.5% from 2020), with the share of residents aged 65+ rising from 46.8% in 2020 to 64.2%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025年

(实际)

4,110人

2030年

(预测)

3,678人

▼ -27.0%

2040年

(预测)

2,593人

▼ -48.5%

2050年

(预测)

1,737人

▼ -65.5%

Change vs. 2020 census

老龄化率(65岁以上): 2020年 46.8%→2050年 64.2%

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岁

Nara (奈良県)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。

Shimoichi 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
198011,460▲ +127.5%Census
198510,801▲ +114.4%Census
19909,950▲ +97.5%Census
19959,532▲ +89.2%Census
20008,670▲ +72.1%Census
20057,737▲ +53.6%Census
20107,020▲ +39.4%Census
20155,664▲ +12.4%Census
20205,037—Census
20254,110▼ -18.4%Census
20303,678▼ -27.0%Projection
20353,112▼ -38.2%Projection
20402,593▼ -48.5%Projection
20452,145▼ -57.4%Projection
20501,737▼ -65.5%Projection

About Shimoichi

Overview

Shimoichi (下市町) is a municipality in Nara, Japan, with a population of 4,110 as of 2025.

Population Projection of Shimoichi

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Shimoichi's population is expected to reach 3,678 by 2030 (-27.0%), 2,593 by 2040 (-48.5%), and 1,737 by 2050 (-65.5%). The town is projected to lose more than half its population over 30 years.

Aging Rate of Shimoichi

The aging rate (percentage of residents aged 65 and over) is 46.8% as of 2020 and is projected to rise to 64.2% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.

National Comparison

Shimoichi is among the most rapidly declining municipalities in Japan.

National and Prefectural Rank

  • Population decline rate: Ranked #26 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #41 out of 1903 nationwide.
  • Population size: Ranked #1653 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Nara

Nara (奈良県)的收入水平: Nara (奈良県)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 Shimoichi, Nara?
A.According to the 2025 national census, Shimoichi has a population of 4,110.
Q.What is the population of Shimoichi in 2026?
A.Shimoichi's population in 2026 is estimated at approximately 4,024. This is an interpolated reference value between the 2025 census (4,110) and the IPSS projection for 2030 (3,678).
Q.What is the projected population of Shimoichi in the future?
A.According to IPSS projections, Shimoichi's population is expected to be 3,678 in 2030, 2,593 in 2040, and 1,737 in 2050.
Q.What is the population decline rate of Shimoichi?
A.Over the 30 years from 2020 to 2050, Shimoichi's population is projected to change by -65.5%. The 10-year change is -27.0% and the 20-year change is -48.5%.
Q.Why is the population of Shimoichi 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 Shimoichi, the share of residents aged 65+ is projected to rise from 46.8% to 64.2% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Shimoichi?
A.Shimoichi's aging rate (percentage aged 65 and over) is 46.8% as of 2020, projected to rise to 64.2% 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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