日本人口减少模拟器

Chiba千葉県

Kisarazu 木更津市

Data last updated:

Kisarazu, Chiba, Japan has a population of 136,224 (2020 national census). IPSS projections estimate 138,409 by 2030 and 133,860 by 2050 (a decrease of about 1.7% from 2020), with the share of residents aged 65+ rising from 27.9% to 33.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2020年

(实际)

136,224人

2030年

(预测)

138,409人

▲ +1.6%

2040年

(预测)

136,987人

▲ +0.6%

2050年

(预测)

133,860人

▼ -1.7%

老龄化率（65岁以上）: 2020年 27.9%→2050年 33.8%

Chiba (千葉県)的其他市区町村

Chiba千葉市Chuuou千葉市中央区Hanamigawa千葉市花見川区Inage千葉市稲毛区Wakaba千葉市若葉区Midori千葉市緑区Mihama千葉市美浜区Choushi銚子市Ichikawa市川市Funabashi船橋市Tateyama館山市Matsudo松戸市Noda野田市Mobara茂原市Narita成田市Sakura佐倉市Tougane東金市Asahi旭市Narashino習志野市Kashiwa柏市
查看Chiba (千葉県)的所有市区町村 →

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。

Kisarazu Population Projection Table (2020–2050)

Population by year, based on the national census and IPSS (2023) projections.

YearPopulationvs 2020Type
2020136,224—Census
2025137,970▲ +1.3%Projection
2030138,409▲ +1.6%Projection
2035138,027▲ +1.3%Projection
2040136,987▲ +0.6%Projection
2045135,565▼ -0.5%Projection
2050133,860▼ -1.7%Projection

About Kisarazu

Overview

Kisarazu (木更津市) is a municipality in Chiba, Japan, with a population of 136,224 as of 2020.

Population Projection of Kisarazu

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kisarazu's population is expected to reach 138,409 by 2030 (+1.6%), 136,987 by 2040 (+0.6%), and 133,860 by 2050 (-1.7%). A modest population change is expected.

Aging Rate of Kisarazu

The aging rate (percentage of residents aged 65 and over) is 27.9% as of 2020 and is projected to rise to 33.8% by 2050. The aging rate will remain below the most severe Japanese averages.

National Comparison

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

National and Prefectural Rank

  • Population decline rate: Ranked #1776 out of 1916 municipalities nationwide.
  • Aging rate in 2050: Ranked #1680 out of 1916 nationwide.
  • Population size: Ranked #310 out of 1916 nationwide.
  • Related: National rankings / All municipalities in Chiba

Frequently Asked Questions

Q.What is the current population of Kisarazu, Chiba?
A.According to the 2020 national census, Kisarazu has a population of 136,224.
Q.What is the population of Kisarazu in 2026?
A.Kisarazu's population in 2026 is estimated at approximately 138,058. This is an interpolated reference value between the 2020 census (136,224) and the IPSS projection for 2030 (138,409).
Q.What is the projected population of Kisarazu in the future?
A.According to IPSS projections, Kisarazu's population is expected to be 138,409 in 2030, 136,987 in 2040, and 133,860 in 2050.
Q.What is the population decline rate of Kisarazu?
A.Over the 30 years from 2020 to 2050, Kisarazu's population is projected to change by -1.7%. The 10-year change is +1.6% and the 20-year change is +0.6%.
Q.Why is the population of Kisarazu 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 Kisarazu, the share of residents aged 65+ is projected to rise from 27.9% to 33.8% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Kisarazu?
A.Kisarazu's aging rate (percentage aged 65 and over) is 27.9% as of 2020, projected to rise to 33.8% 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 the 2020 national census results. Future projections use the IPSS 2023 edition. Data will be updated as new census results become available.

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