日本人口减少模拟器

Saitama埼玉県

Kasukabe 春日部市

Data last updated:

Kasukabe, Saitama, Japan has a population of 223,939 (2025 national census). IPSS projections estimate 213,991 by 2030 and 171,185 by 2050 (a decrease of about 25.5% from 2020), with the share of residents aged 65+ rising from 32.5% in 2020 to 44.6%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025年

(实际)

223,939人

2030年

(预测)

213,991人

▼ -6.9%

2040年

(预测)

191,778人

▼ -16.5%

2050年

(预测)

171,185人

▼ -25.5%

Change vs. 2020 census

老龄化率(65岁以上): 2020年 32.5%→2050年 44.6%

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岁

Saitama (埼玉県)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。

Kasukabe 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
1980187,913▼ -18.2%Census
1985207,021▼ -9.9%Census
1990226,449▼ -1.5%Census
1995238,598▲ +3.8%Census
2000240,924▲ +4.8%Census
2005238,506▲ +3.8%Census
2010237,171▲ +3.2%Census
2015232,709▲ +1.3%Census
2020229,792—Census
2025223,939▼ -2.5%Census
2030213,991▼ -6.9%Projection
2035203,082▼ -11.6%Projection
2040191,778▼ -16.5%Projection
2045180,999▼ -21.2%Projection
2050171,185▼ -25.5%Projection

About Kasukabe

Overview

Kasukabe (春日部市) is a municipality in Saitama, Japan, with a population of 223,939 as of 2025.

Population Projection of Kasukabe

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kasukabe's population is expected to reach 213,991 by 2030 (-6.9%), 191,778 by 2040 (-16.5%), and 171,185 by 2050 (-25.5%). A significant population decline is projected over the next three decades.

Aging Rate of Kasukabe

The aging rate (percentage of residents aged 65 and over) is 32.5% as of 2020 and is projected to rise to 44.6% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.

National Comparison

Kasukabe's population decline rate exceeds the national average.

National and Prefectural Rank

  • Population decline rate: Ranked #1192 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #907 out of 1903 nationwide.
  • Population size: Ranked #154 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Saitama

Saitama (埼玉県)的收入水平: Saitama (埼玉県)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 Kasukabe, Saitama?
A.According to the 2025 national census, Kasukabe has a population of 223,939.
Q.What is the population of Kasukabe in 2026?
A.Kasukabe's population in 2026 is estimated at approximately 221,949. This is an interpolated reference value between the 2025 census (223,939) and the IPSS projection for 2030 (213,991).
Q.What is the projected population of Kasukabe in the future?
A.According to IPSS projections, Kasukabe's population is expected to be 213,991 in 2030, 191,778 in 2040, and 171,185 in 2050.
Q.What is the population decline rate of Kasukabe?
A.Over the 30 years from 2020 to 2050, Kasukabe's population is projected to change by -25.5%. The 10-year change is -6.9% and the 20-year change is -16.5%.
Q.Why is the population of Kasukabe 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 Kasukabe, the share of residents aged 65+ is projected to rise from 32.5% to 44.6% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Kasukabe?
A.Kasukabe's aging rate (percentage aged 65 and over) is 32.5% as of 2020, projected to rise to 44.6% 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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