日本人口减少模拟器

Oita大分県

Hiji 日出町

Data last updated:

Hiji, Oita, Japan has a population of 26,936 (2025 national census). IPSS projections estimate 26,377 by 2030 and 23,163 by 2050 (a decrease of about 16.4% from 2020), with the share of residents aged 65+ rising from 30.8% in 2020 to 39.0%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025年

(实际)

26,936人

2030年

(预测)

26,377人

▼ -4.9%

2040年

(预测)

24,854人

▼ -10.3%

2050年

(预测)

23,163人

▼ -16.4%

Change vs. 2020 census

老龄化率(65岁以上): 2020年 30.8%→2050年 39%

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岁

Oita (大分県)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。

Hiji 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
198021,464▼ -22.6%Census
198522,564▼ -18.6%Census
199023,589▼ -14.9%Census
199524,433▼ -11.9%Census
200026,142▼ -5.7%Census
200527,640▼ -0.3%Census
201028,221▲ +1.8%Census
201528,058▲ +1.2%Census
202027,723—Census
202526,936▼ -2.8%Census
203026,377▼ -4.9%Projection
203525,642▼ -7.5%Projection
204024,854▼ -10.3%Projection
204524,028▼ -13.3%Projection
205023,163▼ -16.4%Projection

About Hiji

Overview

Hiji (日出町) is a municipality in Oita, Japan, with a population of 26,936 as of 2025.

Population Projection of Hiji

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Hiji's population is expected to reach 26,377 by 2030 (-4.9%), 24,854 by 2040 (-10.3%), and 23,163 by 2050 (-16.4%). A modest population change is expected.

Aging Rate of Hiji

The aging rate (percentage of residents aged 65 and over) is 30.8% as of 2020 and is projected to rise to 39.0% by 2050. The aging rate will remain below the most severe Japanese averages.

National Comparison

Hiji's demographic trajectory is similar to the national average.

National and Prefectural Rank

  • Population decline rate: Ranked #1448 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #1344 out of 1903 nationwide.
  • Population size: Ranked #956 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Oita

Oita (大分県)的收入水平: Oita (大分県)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 Hiji, Oita?
A.According to the 2025 national census, Hiji has a population of 26,936.
Q.What is the population of Hiji in 2026?
A.Hiji's population in 2026 is estimated at approximately 26,824. This is an interpolated reference value between the 2025 census (26,936) and the IPSS projection for 2030 (26,377).
Q.What is the projected population of Hiji in the future?
A.According to IPSS projections, Hiji's population is expected to be 26,377 in 2030, 24,854 in 2040, and 23,163 in 2050.
Q.What is the population decline rate of Hiji?
A.Over the 30 years from 2020 to 2050, Hiji's population is projected to change by -16.4%. The 10-year change is -4.9% and the 20-year change is -10.3%.
Q.Why is the population of Hiji 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 Hiji, the share of residents aged 65+ is projected to rise from 30.8% to 39.0% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Hiji?
A.Hiji's aging rate (percentage aged 65 and over) is 30.8% as of 2020, projected to rise to 39.0% 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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