Saitama埼玉県
Kounosu 鴻巣市
Data last updated:
Kounosu, Saitama, Japan has a population of 115,494 (2025 national census). IPSS projections estimate 110,345 by 2030 and 91,849 by 2050 (a decrease of about 21.4% from 2020), with the share of residents aged 65+ rising from 30.0% in 2020 to 40.2%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
115,494
2030
(Projection)
110,345
▼ -5.5%
2040
(Projection)
101,288
▼ -13.3%
2050
(Projection)
91,849
▼ -21.4%
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.
Kounosu 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 | 86,854 | ▼ -25.7% | Census |
| 1985 | 92,971 | ▼ -20.4% | Census |
| 1990 | 107,124 | ▼ -8.3% | Census |
| 1995 | 116,421 | ▼ -0.3% | Census |
| 2000 | 120,271 | ▲ +2.9% | Census |
| 2005 | 119,594 | ▲ +2.4% | Census |
| 2010 | 119,639 | ▲ +2.4% | Census |
| 2015 | 118,072 | ▲ +1.1% | Census |
| 2020 | 116,828 | — | Census |
| 2025 | 115,494 | ▼ -1.1% | Census |
| 2030 | 110,345 | ▼ -5.5% | Projection |
| 2035 | 106,059 | ▼ -9.2% | Projection |
| 2040 | 101,288 | ▼ -13.3% | Projection |
| 2045 | 96,450 | ▼ -17.4% | Projection |
| 2050 | 91,849 | ▼ -21.4% | Projection |
About Kounosu
Overview
Kounosu (鴻巣市) is a municipality in Saitama, Japan, with a population of 115,494 as of 2025.
Population Projection of Kounosu
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kounosu's population is expected to reach 110,345 by 2030 (-5.5%), 101,288 by 2040 (-13.3%), and 91,849 by 2050 (-21.4%). A significant population decline is projected over the next three decades.
Aging Rate of Kounosu
The aging rate (percentage of residents aged 65 and over) is 30.0% as of 2020 and is projected to rise to 40.2% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Kounosu's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1315 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1235 out of 1903 nationwide.
- Population size: Ranked #349 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