일본 인구 감소 시뮬레이터

Tochigi栃木県

Ichikai 市貝町

Data last updated:

Ichikai, Tochigi, Japan has a population of 11,259 (2020 national census). IPSS projections estimate 10,120 by 2030 and 7,681 by 2050 (a decrease of about 31.8% from 2020), with the share of residents aged 65+ rising from 29.7% to 46.5%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2020년

(실적)

11,259명

2030년

(추계)

10,120명

▼ -10.1%

2040년

(추계)

8,961명

▼ -20.4%

2050년

(추계)

7,681명

▼ -31.8%

고령화율（65세 이상）: 2020년 29.7%→2050년 46.5%

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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.

Ichikai Population Projection Table (2020–2050)

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

YearPopulationvs 2020Type
202011,259—Census
202510,662▼ -5.3%Projection
203010,120▼ -10.1%Projection
20359,557▼ -15.1%Projection
20408,961▼ -20.4%Projection
20458,332▼ -26.0%Projection
20507,681▼ -31.8%Projection

About Ichikai

Overview

Ichikai (市貝町) is a municipality in Tochigi, Japan, with a population of 11,259 as of 2020.

Population Projection of Ichikai

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Ichikai's population is expected to reach 10,120 by 2030 (-10.1%), 8,961 by 2040 (-20.4%), and 7,681 by 2050 (-31.8%). A significant population decline is projected over the next three decades.

Aging Rate of Ichikai

The aging rate (percentage of residents aged 65 and over) is 29.7% as of 2020 and is projected to rise to 46.5% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.

National Comparison

Ichikai's population decline rate exceeds the national average.

National and Prefectural Rank

  • Population decline rate: Ranked #999 out of 1916 municipalities nationwide.
  • Aging rate in 2050: Ranked #788 out of 1916 nationwide.
  • Population size: Ranked #1337 out of 1916 nationwide.
  • Related: National rankings / All municipalities in Tochigi

Frequently Asked Questions

Q.What is the current population of Ichikai, Tochigi?
A.According to the 2020 national census, Ichikai has a population of 11,259.
Q.What is the population of Ichikai in 2026?
A.Ichikai's population in 2026 is estimated at approximately 10,554. This is an interpolated reference value between the 2020 census (11,259) and the IPSS projection for 2030 (10,120).
Q.What is the projected population of Ichikai in the future?
A.According to IPSS projections, Ichikai's population is expected to be 10,120 in 2030, 8,961 in 2040, and 7,681 in 2050.
Q.What is the population decline rate of Ichikai?
A.Over the 30 years from 2020 to 2050, Ichikai's population is projected to change by -31.8%. The 10-year change is -10.1% and the 20-year change is -20.4%.
Q.Why is the population of Ichikai 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 Ichikai, the share of residents aged 65+ is projected to rise from 29.7% to 46.5% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Ichikai?
A.Ichikai's aging rate (percentage aged 65 and over) is 29.7% as of 2020, projected to rise to 46.5% 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.

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