日本人口减少模拟器

Saitama埼玉県

Namegawa 滑川町

Data last updated:

Namegawa, Saitama, Japan has a population of 19,911 (2025 national census). IPSS projections estimate 20,785 by 2030 and 21,904 by 2050 (an increase of about 11.0% from 2020), with the share of residents aged 65+ rising from 23.4% in 2020 to 31.2%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025年

(实际)

19,911人

2030年

(预测)

20,785人

▲ +5.3%

2040年

(预测)

21,712人

▲ +10.0%

2050年

(预测)

21,904人

▲ +11.0%

Change vs. 2020 census

老龄化率(65岁以上): 2020年 23.4%→2050年 31.2%

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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。

Namegawa 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
19809,295▼ -52.9%Census
198510,406▼ -47.3%Census
199011,566▼ -41.4%Census
199512,484▼ -36.7%Census
200012,836▼ -34.9%Census
200515,434▼ -21.8%Census
201017,323▼ -12.2%Census
201518,212▼ -7.7%Census
202019,732—Census
202519,911▲ +0.9%Census
203020,785▲ +5.3%Projection
203521,356▲ +8.2%Projection
204021,712▲ +10.0%Projection
204521,874▲ +10.9%Projection
205021,904▲ +11.0%Projection

About Namegawa

Overview

Namegawa (滑川町) is a municipality in Saitama, Japan, with a population of 19,911 as of 2025.

Population Projection of Namegawa

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Namegawa's population is expected to reach 20,785 by 2030 (+5.3%), 21,712 by 2040 (+10.0%), and 21,904 by 2050 (+11.0%). Namegawa is among the rare Japanese municipalities projected to see population growth.

Aging Rate of Namegawa

The aging rate (percentage of residents aged 65 and over) is 23.4% as of 2020 and is projected to rise to 31.2% by 2050. The aging rate will remain below the most severe Japanese averages.

National Comparison

Namegawa stands out as one of the few Japanese municipalities with continued population growth.

National and Prefectural Rank

  • Population decline rate: Ranked #1890 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #1805 out of 1903 nationwide.
  • Population size: Ranked #1078 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 Namegawa, Saitama?
A.According to the 2025 national census, Namegawa has a population of 19,911.
Q.What is the population of Namegawa in 2026?
A.Namegawa's population in 2026 is estimated at approximately 20,086. This is an interpolated reference value between the 2025 census (19,911) and the IPSS projection for 2030 (20,785).
Q.What is the projected population of Namegawa in the future?
A.According to IPSS projections, Namegawa's population is expected to be 20,785 in 2030, 21,712 in 2040, and 21,904 in 2050.
Q.What is the population decline rate of Namegawa?
A.Over the 30 years from 2020 to 2050, Namegawa's population is projected to change by +11.0%. The 10-year change is +5.3% and the 20-year change is +10.0%.
Q.Why is the population of Namegawa growing?
A.Municipalities with growing populations typically benefit from net in-migration driven by good access to major metropolitan areas, housing development, and family support policies. Namegawa is one of the minority of Japanese municipalities projected to grow through 2050.
Q.What is the aging rate of Namegawa?
A.Namegawa's aging rate (percentage aged 65 and over) is 23.4% as of 2020, projected to rise to 31.2% 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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