日本人口减少模拟器

Okayama岡山県

Akaiwa 赤磐市

Data last updated:

Akaiwa, Okayama, Japan has a population of 42,686 (2020 national census). IPSS projections estimate 40,250 by 2030 and 34,386 by 2050 (a decrease of about 19.4% from 2020), with the share of residents aged 65+ rising from 33.9% to 39.5%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2020年

(实际)

42,686人

2030年

(预测)

40,250人

▼ -5.7%

2040年

(预测)

37,265人

▼ -12.7%

2050年

(预测)

34,386人

▼ -19.4%

老龄化率（65岁以上）: 2020年 33.9%→2050年 39.5%

Okayama (岡山県)的其他市区町村

Okayama岡山市Kita岡山市北区Naka岡山市中区Higashi岡山市東区Minami岡山市南区Kurashiki倉敷市Tsuyama津山市Tamano玉野市Kasaoka笠岡市Ibara井原市Souja総社市Takahashi高梁市Niimi新見市Bizen備前市Setouchi瀬戸内市Maniwa真庭市Mimasaka美作市Asakuchi浅口市Wake和気町Hayashima早島町
查看Okayama (岡山県)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。

Akaiwa Population Projection Table (2020–2050)

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

YearPopulationvs 2020Type
202042,686—Census
202541,584▼ -2.6%Projection
203040,250▼ -5.7%Projection
203538,792▼ -9.1%Projection
204037,265▼ -12.7%Projection
204535,791▼ -16.2%Projection
205034,386▼ -19.4%Projection

About Akaiwa

Overview

Akaiwa (赤磐市) is a municipality in Okayama, Japan, with a population of 42,686 as of 2020.

Population Projection of Akaiwa

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Akaiwa's population is expected to reach 40,250 by 2030 (-5.7%), 37,265 by 2040 (-12.7%), and 34,386 by 2050 (-19.4%). A modest population change is expected.

Aging Rate of Akaiwa

The aging rate (percentage of residents aged 65 and over) is 33.9% as of 2020 and is projected to rise to 39.5% by 2050. The aging rate will remain below the most severe Japanese averages.

National Comparison

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

National and Prefectural Rank

  • Population decline rate: Ranked #1371 out of 1916 municipalities nationwide.
  • Aging rate in 2050: Ranked #1305 out of 1916 nationwide.
  • Population size: Ranked #777 out of 1916 nationwide.
  • Related: National rankings / All municipalities in Okayama

Frequently Asked Questions

Q.What is the current population of Akaiwa, Okayama?
A.According to the 2020 national census, Akaiwa has a population of 42,686.
Q.What is the population of Akaiwa in 2026?
A.Akaiwa's population in 2026 is estimated at approximately 41,317. This is an interpolated reference value between the 2020 census (42,686) and the IPSS projection for 2030 (40,250).
Q.What is the projected population of Akaiwa in the future?
A.According to IPSS projections, Akaiwa's population is expected to be 40,250 in 2030, 37,265 in 2040, and 34,386 in 2050.
Q.What is the population decline rate of Akaiwa?
A.Over the 30 years from 2020 to 2050, Akaiwa's population is projected to change by -19.4%. The 10-year change is -5.7% and the 20-year change is -12.7%.
Q.Why is the population of Akaiwa 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 Akaiwa, the share of residents aged 65+ is projected to rise from 33.9% to 39.5% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Akaiwa?
A.Akaiwa's aging rate (percentage aged 65 and over) is 33.9% as of 2020, projected to rise to 39.5% 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.

Similar-Sized Municipalities in Okayama

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Asakuchi浅口市
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View all 31 municipalities in Okayama →

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