일본 인구 감소 시뮬레이터

Nagano長野県

Komagane 駒ヶ根市

Data last updated:

Komagane, Nagano, Japan has a population of 30,861 (2025 national census). IPSS projections estimate 29,907 by 2030 and 25,286 by 2050 (a decrease of about 21.5% from 2020), with the share of residents aged 65+ rising from 31.0% in 2020 to 40.3%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025년

(실적)

30,861명

2030년

(추계)

29,907명

▼ -7.1%

2040년

(추계)

27,667명

▼ -14.1%

2050년

(추계)

25,286명

▼ -21.5%

Change vs. 2020 census

고령화율(65세 이상): 2020년 31%→2050년 40.3%

나이를 입력해 주세요

나이를 입력하면 50·60·70·80세가 되는 해의 駒ヶ根市 인구를 알 수 있습니다.

세

Nagano (長野県)의 다른 시구정촌

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.

Komagane 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
198031,179▼ -3.2%Census
198532,396▲ +0.6%Census
199032,771▲ +1.8%Census
199533,601▲ +4.3%Census
200034,338▲ +6.6%Census
200534,417▲ +6.9%Census
201033,693▲ +4.6%Census
201532,759▲ +1.7%Census
202032,202—Census
202530,861▼ -4.2%Census
203029,907▼ -7.1%Projection
203528,816▼ -10.5%Projection
204027,667▼ -14.1%Projection
204526,493▼ -17.7%Projection
205025,286▼ -21.5%Projection

About Komagane

Overview

Komagane (駒ヶ根市) is a municipality in Nagano, Japan, with a population of 30,861 as of 2025.

Population Projection of Komagane

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Komagane's population is expected to reach 29,907 by 2030 (-7.1%), 27,667 by 2040 (-14.1%), and 25,286 by 2050 (-21.5%). A significant population decline is projected over the next three decades.

Aging Rate of Komagane

The aging rate (percentage of residents aged 65 and over) is 31.0% as of 2020 and is projected to rise to 40.3% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.

National Comparison

Komagane's population decline rate exceeds the national average.

National and Prefectural Rank

  • Population decline rate: Ranked #1312 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #1227 out of 1903 nationwide.
  • Population size: Ranked #889 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Nagano

Nagano (長野県)의 소득 수준: Nagano (長野県)의 평균 연봉(연령·성별·기업 규모별)jpsalary / 후생노동성 임금구조 기본통계조사

Frequently Asked Questions

Q.What is the current population of Komagane, Nagano?
A.According to the 2025 national census, Komagane has a population of 30,861.
Q.What is the population of Komagane in 2026?
A.Komagane's population in 2026 is estimated at approximately 30,670. This is an interpolated reference value between the 2025 census (30,861) and the IPSS projection for 2030 (29,907).
Q.What is the projected population of Komagane in the future?
A.According to IPSS projections, Komagane's population is expected to be 29,907 in 2030, 27,667 in 2040, and 25,286 in 2050.
Q.What is the population decline rate of Komagane?
A.Over the 30 years from 2020 to 2050, Komagane's population is projected to change by -21.5%. The 10-year change is -7.1% and the 20-year change is -14.1%.
Q.Why is the population of Komagane 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 Komagane, the share of residents aged 65+ is projected to rise from 31.0% to 40.3% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Komagane?
A.Komagane's aging rate (percentage aged 65 and over) is 31.0% as of 2020, projected to rise to 40.3% 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.

Similar-Sized Municipalities in Nagano

Municipalities with Similar Trends

Share this page