Saga佐賀県
Oomachi 大町町
Data last updated:
Oomachi, Saga, Japan has a population of 6,305 (2020 national census). IPSS projections estimate 5,346 by 2030 and 3,577 by 2050 (a decrease of about 43.3% from 2020), with the share of residents aged 65+ rising from 40.8% to 49.4%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2020
(Census)
6,305
2030
(Projection)
5,346
▼ -15.2%
2040
(Projection)
4,442
▼ -29.5%
2050
(Projection)
3,577
▼ -43.3%
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.
Oomachi Population Projection Table (2020–2050)
Population by year, based on the national census and IPSS (2023) projections.
| Year | Population | vs 2020 | Type |
|---|---|---|---|
| 2020 | 6,305 | — | Census |
| 2025 | 5,810 | ▼ -7.9% | Projection |
| 2030 | 5,346 | ▼ -15.2% | Projection |
| 2035 | 4,880 | ▼ -22.6% | Projection |
| 2040 | 4,442 | ▼ -29.5% | Projection |
| 2045 | 3,996 | ▼ -36.6% | Projection |
| 2050 | 3,577 | ▼ -43.3% | Projection |
About Oomachi
Overview
Oomachi (大町町) is a municipality in Saga, Japan, with a population of 6,305 as of 2020.
Population Projection of Oomachi
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 Rate of Oomachi
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 / All municipalities in Saga