Japan Population Decline Simulator

Saga佐賀県

Oomachi 大町町

Data last updated:

2020

(Census)

6,305

2030

(Projection)

5,346

-15.2%

2040

(Projection)

4,442

-29.5%

2050

(Projection)

3,577

-43.3%

Elderly Rate (65+): 2020 40.8%2050 49.4%

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.

About Oomachi

Overview

Oomachi (大町町) is a municipality in Saga, Japan, with a population of 6,305 as of 2020.

Population Projection

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Oomachi's population is expected to reach 5,346 by 2030 (-15.2%), 4,442 by 2040 (-29.5%), and 3,577 by 2050 (-43.3%). A significant population decline is projected over the next three decades.

Aging Outlook

The aging rate (percentage of residents aged 65 and over) is 40.8% as of 2020 and is projected to rise to 49.4% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.

National Comparison

Oomachi is experiencing one of the faster rates of population decline in Japan.

National and Prefectural Rank

  • Population decline rate: Ranked #590 out of 1916 municipalities nationwide.
  • Aging rate in 2050: Ranked #601 out of 1916 nationwide.
  • Population size: Ranked #1555 out of 1916 nationwide.
  • Related: National rankings

Frequently Asked Questions

Q.What is the current population of Oomachi, Saga?
A.According to the 2020 national census, Oomachi has a population of 6,305.
Q.What is the projected population of Oomachi in the future?
A.According to IPSS projections, Oomachi's population is expected to be 5,346 in 2030, 4,442 in 2040, and 3,577 in 2050.
Q.What is the population decline rate of Oomachi?
A.Over the 30 years from 2020 to 2050, Oomachi's population is projected to change by -43.3%. The 10-year change is -15.2% and the 20-year change is -29.5%.
Q.What is the aging rate of Oomachi?
A.Oomachi's aging rate (percentage aged 65 and over) is 40.8% as of 2020, projected to rise to 49.4% 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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