Kanagawa神奈川県
Hayama 葉山町
Data last updated:
Hayama, Kanagawa, Japan has a population of 30,030 (2025 national census). IPSS projections estimate 29,800 by 2030 and 27,051 by 2050 (a decrease of about 14.6% from 2020), with the share of residents aged 65+ rising from 32.4% in 2020 to 41.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
30,030
2030
(Projection)
29,800
▼ -5.9%
2040
(Projection)
28,089
▼ -11.3%
2050
(Projection)
27,051
▼ -14.6%
Change vs. 2020 census
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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.
Hayama 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 | 28,359 | ▼ -10.4% | Census |
| 1985 | 29,231 | ▼ -7.7% | Census |
| 1990 | 29,536 | ▼ -6.7% | Census |
| 1995 | 29,883 | ▼ -5.6% | Census |
| 2000 | 30,413 | ▼ -4.0% | Census |
| 2005 | 31,531 | ▼ -0.4% | Census |
| 2010 | 32,766 | ▲ +3.5% | Census |
| 2015 | 32,096 | ▲ +1.4% | Census |
| 2020 | 31,665 | — | Census |
| 2025 | 30,030 | ▼ -5.2% | Census |
| 2030 | 29,800 | ▼ -5.9% | Projection |
| 2035 | 28,848 | ▼ -8.9% | Projection |
| 2040 | 28,089 | ▼ -11.3% | Projection |
| 2045 | 27,516 | ▼ -13.1% | Projection |
| 2050 | 27,051 | ▼ -14.6% | Projection |
About Hayama
Overview
Hayama (葉山町) is a municipality in Kanagawa, Japan, with a population of 30,030 as of 2025.
Population Projection of Hayama
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Hayama's population is expected to reach 29,800 by 2030 (-5.9%), 28,089 by 2040 (-11.3%), and 27,051 by 2050 (-14.6%). A modest population change is expected.
Aging Rate of Hayama
The aging rate (percentage of residents aged 65 and over) is 32.4% as of 2020 and is projected to rise to 41.8% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Hayama's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1492 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1108 out of 1903 nationwide.
- Population size: Ranked #905 out of 1917 nationwide.
- Related: National rankings / All municipalities in Kanagawa
Earnings in Kanagawa (神奈川県): Average salary in Kanagawa (神奈川県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure