日本人口减少模拟器

Kanagawa神奈川県

Isehara 伊勢原市

Data last updated:

Isehara, Kanagawa, Japan has a population of 100,352 (2025 national census). IPSS projections estimate 98,528 by 2030 and 87,248 by 2050 (a decrease of about 14.3% from 2020), with the share of residents aged 65+ rising from 26.5% in 2020 to 37.7%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025年

(实际)

100,352人

2030年

(预测)

98,528人

▼ -3.2%

2040年

(预测)

93,211人

▼ -8.4%

2050年

(预测)

87,248人

▼ -14.3%

Change vs. 2020 census

老龄化率(65岁以上): 2020年 26.5%→2050年 37.7%

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岁

Kanagawa (神奈川県)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。

Isehara 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
198070,052▼ -31.2%Census
198577,766▼ -23.6%Census
199089,567▼ -12.0%Census
199598,123▼ -3.6%Census
200099,544▼ -2.2%Census
2005100,579▼ -1.2%Census
2010101,039▼ -0.7%Census
2015101,514▼ -0.3%Census
2020101,780—Census
2025100,352▼ -1.4%Census
203098,528▼ -3.2%Projection
203596,081▼ -5.6%Projection
204093,211▼ -8.4%Projection
204590,187▼ -11.4%Projection
205087,248▼ -14.3%Projection

About Isehara

Overview

Isehara (伊勢原市) is a municipality in Kanagawa, Japan, with a population of 100,352 as of 2025.

Population Projection of Isehara

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Isehara's population is expected to reach 98,528 by 2030 (-3.2%), 93,211 by 2040 (-8.4%), and 87,248 by 2050 (-14.3%). A modest population change is expected.

Aging Rate of Isehara

The aging rate (percentage of residents aged 65 and over) is 26.5% as of 2020 and is projected to rise to 37.7% by 2050. The aging rate will remain below the most severe Japanese averages.

National Comparison

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

National and Prefectural Rank

  • Population decline rate: Ranked #1499 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #1420 out of 1903 nationwide.
  • Population size: Ranked #415 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Kanagawa

Kanagawa (神奈川県)的收入水平: Kanagawa (神奈川県)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 Isehara, Kanagawa?
A.According to the 2025 national census, Isehara has a population of 100,352.
Q.What is the population of Isehara in 2026?
A.Isehara's population in 2026 is estimated at approximately 99,987. This is an interpolated reference value between the 2025 census (100,352) and the IPSS projection for 2030 (98,528).
Q.What is the projected population of Isehara in the future?
A.According to IPSS projections, Isehara's population is expected to be 98,528 in 2030, 93,211 in 2040, and 87,248 in 2050.
Q.What is the population decline rate of Isehara?
A.Over the 30 years from 2020 to 2050, Isehara's population is projected to change by -14.3%. The 10-year change is -3.2% and the 20-year change is -8.4%.
Q.Why is the population of Isehara 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 Isehara, the share of residents aged 65+ is projected to rise from 26.5% to 37.7% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Isehara?
A.Isehara's aging rate (percentage aged 65 and over) is 26.5% as of 2020, projected to rise to 37.7% 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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