일본 인구 감소 시뮬레이터

Tokyo東京都

Kokubunji 国分寺市

Data last updated:

Kokubunji, Tokyo, Japan has a population of 129,353 (2020 national census). IPSS projections estimate 132,981 by 2030 and 130,403 by 2050 (an increase of about 0.8% from 2020), with the share of residents aged 65+ rising from 21.7% to 29.4%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2020년

(실적)

129,353명

2030년

(추계)

132,981명

▲ +2.8%

2040년

(추계)

133,144명

▲ +2.9%

2050년

(추계)

130,403명

▲ +0.8%

고령화율（65세 이상）: 2020년 21.7%→2050년 29.4%

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데이터 출처

  • 일본 정부 통계 종합 포털(e-Stat)（https://www.e-stat.go.jp/）
  • 국립사회보장・인구문제연구소 「일본의 지역별 장래추계인구(레이와 5년 추계)」

※이 서비스는 e-Stat의 API 기능을 사용하고 있으나 서비스 내용은 일본 정부에 의해 보증된 것이 아닙니다.

Kokubunji Population Projection Table (2020–2050)

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

YearPopulationvs 2020Type
2020129,353—Census
2025132,238▲ +2.2%Projection
2030132,981▲ +2.8%Projection
2035133,480▲ +3.2%Projection
2040133,144▲ +2.9%Projection
2045131,964▲ +2.0%Projection
2050130,403▲ +0.8%Projection

About Kokubunji

Overview

Kokubunji (国分寺市) is a municipality in Tokyo, Japan, with a population of 129,353 as of 2020.

Population Projection of Kokubunji

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kokubunji's population is expected to reach 132,981 by 2030 (+2.8%), 133,144 by 2040 (+2.9%), and 130,403 by 2050 (+0.8%). Kokubunji is among the rare Japanese municipalities projected to see population growth.

Aging Rate of Kokubunji

The aging rate (percentage of residents aged 65 and over) is 21.7% as of 2020 and is projected to rise to 29.4% by 2050. The aging rate will remain below the most severe Japanese averages.

National Comparison

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

National and Prefectural Rank

  • Population decline rate: Ranked #1819 out of 1916 municipalities nationwide.
  • Aging rate in 2050: Ranked #1842 out of 1916 nationwide.
  • Population size: Ranked #327 out of 1916 nationwide.
  • Related: National rankings / All municipalities in Tokyo

Frequently Asked Questions

Q.What is the current population of Kokubunji, Tokyo?
A.According to the 2020 national census, Kokubunji has a population of 129,353.
Q.What is the population of Kokubunji in 2026?
A.Kokubunji's population in 2026 is estimated at approximately 132,387. This is an interpolated reference value between the 2020 census (129,353) and the IPSS projection for 2030 (132,981).
Q.What is the projected population of Kokubunji in the future?
A.According to IPSS projections, Kokubunji's population is expected to be 132,981 in 2030, 133,144 in 2040, and 130,403 in 2050.
Q.What is the population decline rate of Kokubunji?
A.Over the 30 years from 2020 to 2050, Kokubunji's population is projected to change by +0.8%. The 10-year change is +2.8% and the 20-year change is +2.9%.
Q.Why is the population of Kokubunji 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. Kokubunji is one of the minority of Japanese municipalities projected to grow through 2050.
Q.What is the aging rate of Kokubunji?
A.Kokubunji's aging rate (percentage aged 65 and over) is 21.7% as of 2020, projected to rise to 29.4% 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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