Japan Population Decline Simulator

Saga佐賀県

Saga 佐賀市

Data last updated:

Saga, Saga, Japan has a population of 233,466 (2020 national census). IPSS projections estimate 222,225 by 2030 and 194,311 by 2050 (a decrease of about 16.8% from 2020), with the share of residents aged 65+ rising from 28.5% to 37.4%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2020

(Census)

233,466

2030

(Projection)

222,225

-4.8%

2040

(Projection)

208,991

-10.5%

2050

(Projection)

194,311

-16.8%

Elderly Rate (65+): 2020 28.5%2050 37.4%

Other municipalities in Saga (佐賀県)

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.

Saga Population Projection Table (2020–2050)

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

YearPopulationvs 2020Type
2020233,466Census
2025228,262▼ -2.2%Projection
2030222,225▼ -4.8%Projection
2035215,778▼ -7.6%Projection
2040208,991▼ -10.5%Projection
2045201,748▼ -13.6%Projection
2050194,311▼ -16.8%Projection

About Saga

Overview

Saga (佐賀市) is a municipality in Saga, Japan, with a population of 233,466 as of 2020.

Population Projection of Saga

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Saga's population is expected to reach 222,225 by 2030 (-4.8%), 208,991 by 2040 (-10.5%), and 194,311 by 2050 (-16.8%). A modest population change is expected.

Aging Rate of Saga

The aging rate (percentage of residents aged 65 and over) is 28.5% as of 2020 and is projected to rise to 37.4% by 2050. The aging rate will remain below the most severe Japanese averages.

National Comparison

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

National and Prefectural Rank

  • Population decline rate: Ranked #1443 out of 1916 municipalities nationwide.
  • Aging rate in 2050: Ranked #1448 out of 1916 nationwide.
  • Population size: Ranked #145 out of 1916 nationwide.
  • Related: National rankings / All municipalities in Saga

Frequently Asked Questions

Q.What is the current population of Saga, Saga?
A.According to the 2020 national census, Saga has a population of 233,466.
Q.What is the population of Saga in 2026?
A.Saga's population in 2026 is estimated at approximately 227,055. This is an interpolated reference value between the 2020 census (233,466) and the IPSS projection for 2030 (222,225).
Q.What is the projected population of Saga in the future?
A.According to IPSS projections, Saga's population is expected to be 222,225 in 2030, 208,991 in 2040, and 194,311 in 2050.
Q.What is the population decline rate of Saga?
A.Over the 30 years from 2020 to 2050, Saga's population is projected to change by -16.8%. The 10-year change is -4.8% and the 20-year change is -10.5%.
Q.Why is the population of Saga 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 Saga, the share of residents aged 65+ is projected to rise from 28.5% to 37.4% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Saga?
A.Saga's aging rate (percentage aged 65 and over) is 28.5% as of 2020, projected to rise to 37.4% 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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