Saga佐賀県
Kouhoku 江北町
Data last updated:
Kouhoku, Saga, Japan has a population of 9,506 (2025 national census). IPSS projections estimate 9,251 by 2030 and 8,313 by 2050 (a decrease of about 13.1% from 2020), with the share of residents aged 65+ rising from 28.6% in 2020 to 35.5%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025Census
9,506
2030Projection
9,251
▼ -3.3%
2040Projection
8,828
▼ -7.7%
2050Projection
8,313
▼ -13.1%
Change vs. 2020 census
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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.
Kouhoku 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 | 9,732 | ▲ +1.7% | Census |
| 1985 | 9,728 | ▲ +1.7% | Census |
| 1990 | 9,483 | ▼ -0.9% | Census |
| 1995 | 9,539 | ▼ -0.3% | Census |
| 2000 | 9,584 | ▲ +0.2% | Census |
| 2005 | 9,628 | ▲ +0.6% | Census |
| 2010 | 9,515 | ▼ -0.5% | Census |
| 2015 | 9,583 | ▲ +0.2% | Census |
| 2020 | 9,566 | — | Census |
| 2025 | 9,506 | ▼ -0.6% | Census |
| 2030 | 9,251 | ▼ -3.3% | Projection |
| 2035 | 9,045 | ▼ -5.4% | Projection |
| 2040 | 8,828 | ▼ -7.7% | Projection |
| 2045 | 8,573 | ▼ -10.4% | Projection |
| 2050 | 8,313 | ▼ -13.1% | Projection |
About Kouhoku
Overview
Kouhoku (江北町) is a municipality in Saga, Japan, with a population of 9,506 as of 2025.
Population Projection of Kouhoku
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kouhoku's population is expected to reach 9,251 by 2030 (-3.3%), 8,828 by 2040 (-7.7%), and 8,313 by 2050 (-13.1%). A modest population change is expected.
Aging Rate of Kouhoku
The aging rate (percentage of residents aged 65 and over) is 28.6% as of 2020 and is projected to rise to 35.5% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Kouhoku's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1533 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1586 out of 1903 nationwide.
- Population size: Ranked #1371 out of 1917 nationwide.
- Related: National rankings / All municipalities in Saga
Earnings in Saga (佐賀県): Average salary in Saga (佐賀県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure