Japan Population Decline Simulator

Kagoshima鹿児島県

Satsumasendai 薩摩川内市

Data last updated:

Satsumasendai, Kagoshima, Japan has a population of 87,618 (2025 national census). IPSS projections estimate 84,207 by 2030 and 67,988 by 2050 (a decrease of about 26.4% from 2020), with the share of residents aged 65+ rising from 32.3% in 2020 to 40.2%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025

(Census)

87,618

2030

(Projection)

84,207

▼ -8.9%

2040

(Projection)

76,106

▼ -17.6%

2050

(Projection)

67,988

▼ -26.4%

Change vs. 2020 census

Elderly Rate (65+): 2020 32.3%→2050 40.2%

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Other municipalities in Kagoshima (鹿児島県)

Data Sources

  • Portal Site of Official Statistics of Japan (e-Stat)(https://www.e-stat.go.jp/)
  • National Institute of Population and Social Security Research (IPSS), Regional Population Projections (2023 ed.)

* This service uses the e-Stat API but its content is not guaranteed by the Japanese government.

Satsumasendai 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
1980102,143▲ +10.5%Census
1985108,105▲ +17.0%Census
1990106,432▲ +15.2%Census
1995106,737▲ +15.5%Census
2000105,464▲ +14.1%Census
2005102,370▲ +10.8%Census
201099,589▲ +7.8%Census
201596,076▲ +4.0%Census
202092,403—Census
202587,618▼ -5.2%Census
203084,207▼ -8.9%Projection
203580,087▼ -13.3%Projection
204076,106▼ -17.6%Projection
204572,084▼ -22.0%Projection
205067,988▼ -26.4%Projection

About Satsumasendai

Overview

Satsumasendai (薩摩川内市) is a municipality in Kagoshima, Japan, with a population of 87,618 as of 2025.

Population Projection of Satsumasendai

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Satsumasendai's population is expected to reach 84,207 by 2030 (-8.9%), 76,106 by 2040 (-17.6%), and 67,988 by 2050 (-26.4%). A significant population decline is projected over the next three decades.

Aging Rate of Satsumasendai

The aging rate (percentage of residents aged 65 and over) is 32.3% as of 2020 and is projected to rise to 40.2% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.

National Comparison

Satsumasendai's population decline rate exceeds the national average.

National and Prefectural Rank

  • Population decline rate: Ranked #1160 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #1242 out of 1903 nationwide.
  • Population size: Ranked #461 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Kagoshima

Earnings in Kagoshima (鹿児島県): Average salary in Kagoshima (鹿児島県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure

Frequently Asked Questions

Q.What is the current population of Satsumasendai, Kagoshima?
A.According to the 2025 national census, Satsumasendai has a population of 87,618.
Q.What is the population of Satsumasendai in 2026?
A.Satsumasendai's population in 2026 is estimated at approximately 86,936. This is an interpolated reference value between the 2025 census (87,618) and the IPSS projection for 2030 (84,207).
Q.What is the projected population of Satsumasendai in the future?
A.According to IPSS projections, Satsumasendai's population is expected to be 84,207 in 2030, 76,106 in 2040, and 67,988 in 2050.
Q.What is the population decline rate of Satsumasendai?
A.Over the 30 years from 2020 to 2050, Satsumasendai's population is projected to change by -26.4%. The 10-year change is -8.9% and the 20-year change is -17.6%.
Q.Why is the population of Satsumasendai 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 Satsumasendai, the share of residents aged 65+ is projected to rise from 32.3% to 40.2% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Satsumasendai?
A.Satsumasendai's aging rate (percentage aged 65 and over) is 32.3% as of 2020, projected to rise to 40.2% 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.

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