Fukuoka福岡県
Onga 遠賀町
Data last updated:
Onga, Fukuoka, Japan has a population of 18,391 (2025 national census). IPSS projections estimate 17,363 by 2030 and 14,203 by 2050 (a decrease of about 24.1% from 2020), with the share of residents aged 65+ rising from 34.8% in 2020 to 39.4%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
18,391
2030
(Projection)
17,363
▼ -7.3%
2040
(Projection)
15,721
▼ -16.0%
2050
(Projection)
14,203
▼ -24.1%
Change vs. 2020 census
Enter your age
See the population of 遠賀町 when you turn 50, 60, 70 and 80.
Other municipalities in Fukuoka (福岡県)
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.
Onga Population Table (1980–2050)
Population by year: national census results (restated to current municipal boundaries) and IPSS (2023) projections based on the 2020 census.
| Year | Population | vs 2020 | Type |
|---|---|---|---|
| 1980 | 14,188 | ▼ -24.2% | Census |
| 1985 | 15,994 | ▼ -14.6% | Census |
| 1990 | 17,107 | ▼ -8.6% | Census |
| 1995 | 18,999 | ▲ +1.5% | Census |
| 2000 | 19,309 | ▲ +3.1% | Census |
| 2005 | 19,279 | ▲ +3.0% | Census |
| 2010 | 19,160 | ▲ +2.3% | Census |
| 2015 | 18,877 | ▲ +0.8% | Census |
| 2020 | 18,723 | — | Census |
| 2025 | 18,391 | ▼ -1.8% | Census |
| 2030 | 17,363 | ▼ -7.3% | Projection |
| 2035 | 16,534 | ▼ -11.7% | Projection |
| 2040 | 15,721 | ▼ -16.0% | Projection |
| 2045 | 14,935 | ▼ -20.2% | Projection |
| 2050 | 14,203 | ▼ -24.1% | Projection |
About Onga
Overview
Onga (遠賀町) is a municipality in Fukuoka, Japan, with a population of 18,391 as of 2025.
Population Projection of Onga
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Onga's population is expected to reach 17,363 by 2030 (-7.3%), 15,721 by 2040 (-16.0%), and 14,203 by 2050 (-24.1%). A significant population decline is projected over the next three decades.
Aging Rate of Onga
The aging rate (percentage of residents aged 65 and over) is 34.8% as of 2020 and is projected to rise to 39.4% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Onga's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1237 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1310 out of 1903 nationwide.
- Population size: Ranked #1100 out of 1917 nationwide.
- Related: National rankings / All municipalities in Fukuoka
Earnings in Fukuoka (福岡県): Average salary in Fukuoka (福岡県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure