日本人口减少模拟器

Yamaguchi山口県

Hagi 萩市

Data last updated:

Hagi, Yamaguchi, Japan has a population of 39,745 (2025 national census). IPSS projections estimate 35,436 by 2030 and 21,167 by 2050 (a decrease of about 52.6% from 2020), with the share of residents aged 65+ rising from 44.0% in 2020 to 57.5%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025年

(实际)

39,745人

2030年

(预测)

35,436人

▼ -20.6%

2040年

(预测)

27,765人

▼ -37.8%

2050年

(预测)

21,167人

▼ -52.6%

Change vs. 2020 census

老龄化率(65岁以上): 2020年 44%→2050年 57.5%

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岁

Yamaguchi (山口県)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。

Hagi 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
198074,846▲ +67.7%Census
198572,748▲ +63.0%Census
199068,999▲ +54.6%Census
199565,293▲ +46.3%Census
200061,745▲ +38.4%Census
200557,990▲ +29.9%Census
201053,747▲ +20.4%Census
201549,560▲ +11.1%Census
202044,626—Census
202539,745▼ -10.9%Census
203035,436▼ -20.6%Projection
203531,476▼ -29.5%Projection
204027,765▼ -37.8%Projection
204524,303▼ -45.5%Projection
205021,167▼ -52.6%Projection

About Hagi

Overview

Hagi (萩市) is a municipality in Yamaguchi, Japan, with a population of 39,745 as of 2025.

Population Projection of Hagi

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Hagi's population is expected to reach 35,436 by 2030 (-20.6%), 27,765 by 2040 (-37.8%), and 21,167 by 2050 (-52.6%). The town is projected to lose more than half its population over 30 years.

Aging Rate of Hagi

The aging rate (percentage of residents aged 65 and over) is 44.0% as of 2020 and is projected to rise to 57.5% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.

National Comparison

Hagi is experiencing one of the faster rates of population decline in Japan.

National and Prefectural Rank

  • Population decline rate: Ranked #244 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #184 out of 1903 nationwide.
  • Population size: Ranked #782 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Yamaguchi

Yamaguchi (山口県)的收入水平: Yamaguchi (山口県)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 Hagi, Yamaguchi?
A.According to the 2025 national census, Hagi has a population of 39,745.
Q.What is the population of Hagi in 2026?
A.Hagi's population in 2026 is estimated at approximately 38,883. This is an interpolated reference value between the 2025 census (39,745) and the IPSS projection for 2030 (35,436).
Q.What is the projected population of Hagi in the future?
A.According to IPSS projections, Hagi's population is expected to be 35,436 in 2030, 27,765 in 2040, and 21,167 in 2050.
Q.What is the population decline rate of Hagi?
A.Over the 30 years from 2020 to 2050, Hagi's population is projected to change by -52.6%. The 10-year change is -20.6% and the 20-year change is -37.8%.
Q.Why is the population of Hagi 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 Hagi, the share of residents aged 65+ is projected to rise from 44.0% to 57.5% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Hagi?
A.Hagi's aging rate (percentage aged 65 and over) is 44.0% as of 2020, projected to rise to 57.5% 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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