Saitama埼玉県
Hannou 飯能市
Data last updated:
Hannou, Saitama, Japan has a population of 77,707 (2025 national census). IPSS projections estimate 76,263 by 2030 and 63,609 by 2050 (a decrease of about 20.8% from 2020), with the share of residents aged 65+ rising from 31.7% in 2020 to 41.7%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
77,707
2030
(Projection)
76,263
▼ -5.1%
2040
(Projection)
69,911
▼ -13.0%
2050
(Projection)
63,609
▼ -20.8%
Change vs. 2020 census
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Other municipalities in Saitama (埼玉県)
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.
Hannou 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 | 63,902 | ▼ -20.5% | Census |
| 1985 | 69,109 | ▼ -14.0% | Census |
| 1990 | 75,794 | ▼ -5.7% | Census |
| 1995 | 83,278 | ▲ +3.6% | Census |
| 2000 | 85,886 | ▲ +6.9% | Census |
| 2005 | 84,860 | ▲ +5.6% | Census |
| 2010 | 83,549 | ▲ +4.0% | Census |
| 2015 | 80,715 | ▲ +0.4% | Census |
| 2020 | 80,361 | — | Census |
| 2025 | 77,707 | ▼ -3.3% | Census |
| 2030 | 76,263 | ▼ -5.1% | Projection |
| 2035 | 73,216 | ▼ -8.9% | Projection |
| 2040 | 69,911 | ▼ -13.0% | Projection |
| 2045 | 66,635 | ▼ -17.1% | Projection |
| 2050 | 63,609 | ▼ -20.8% | Projection |
About Hannou
Overview
Hannou (飯能市) is a municipality in Saitama, Japan, with a population of 77,707 as of 2025.
Population Projection of Hannou
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Hannou's population is expected to reach 76,263 by 2030 (-5.1%), 69,911 by 2040 (-13.0%), and 63,609 by 2050 (-20.8%). A significant population decline is projected over the next three decades.
Aging Rate of Hannou
The aging rate (percentage of residents aged 65 and over) is 31.7% as of 2020 and is projected to rise to 41.7% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Hannou's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1328 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1113 out of 1903 nationwide.
- Population size: Ranked #501 out of 1917 nationwide.
- Related: National rankings / All municipalities in Saitama
Earnings in Saitama (埼玉県): Average salary in Saitama (埼玉県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure