Chiba千葉県
Kouzaki 神崎町
Data last updated:
Kouzaki, Chiba, Japan has a population of 5,267 (2025 national census). IPSS projections estimate 5,158 by 2030 and 3,697 by 2050 (a decrease of about 36.4% from 2020), with the share of residents aged 65+ rising from 35.1% in 2020 to 51.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
5,267
2030
(Projection)
5,158
▼ -11.3%
2040
(Projection)
4,448
▼ -23.5%
2050
(Projection)
3,697
▼ -36.4%
Change vs. 2020 census
Enter your age
See the population of 神崎町 when you turn 50, 60, 70 and 80.
Other municipalities in Chiba (千葉県)
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.
Kouzaki 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 | 5,645 | ▼ -2.9% | Census |
| 1985 | 5,639 | ▼ -3.0% | Census |
| 1990 | 5,620 | ▼ -3.4% | Census |
| 1995 | 6,156 | ▲ +5.8% | Census |
| 2000 | 6,747 | ▲ +16.0% | Census |
| 2005 | 6,705 | ▲ +15.3% | Census |
| 2010 | 6,454 | ▲ +11.0% | Census |
| 2015 | 6,133 | ▲ +5.5% | Census |
| 2020 | 5,816 | — | Census |
| 2025 | 5,267 | ▼ -9.4% | Census |
| 2030 | 5,158 | ▼ -11.3% | Projection |
| 2035 | 4,818 | ▼ -17.2% | Projection |
| 2040 | 4,448 | ▼ -23.5% | Projection |
| 2045 | 4,073 | ▼ -30.0% | Projection |
| 2050 | 3,697 | ▼ -36.4% | Projection |
About Kouzaki
Overview
Kouzaki (神崎町) is a municipality in Chiba, Japan, with a population of 5,267 as of 2025.
Population Projection of Kouzaki
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kouzaki's population is expected to reach 5,158 by 2030 (-11.3%), 4,448 by 2040 (-23.5%), and 3,697 by 2050 (-36.4%). A significant population decline is projected over the next three decades.
Aging Rate of Kouzaki
The aging rate (percentage of residents aged 65 and over) is 35.1% as of 2020 and is projected to rise to 51.8% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Kouzaki's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #844 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #433 out of 1903 nationwide.
- Population size: Ranked #1582 out of 1917 nationwide.
- Related: National rankings / All municipalities in Chiba
Earnings in Chiba (千葉県): Average salary in Chiba (千葉県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure