Shizuoka静岡県
Atami 熱海市
Data last updated:
Atami, Shizuoka, Japan has a population of 31,330 (2025 national census). IPSS projections estimate 29,427 by 2030 and 20,578 by 2050 (a decrease of about 39.8% from 2020), with the share of residents aged 65+ rising from 48.7% in 2020 to 60.2%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
31,330
2030
(Projection)
29,427
▼ -14.0%
2040
(Projection)
24,640
▼ -28.0%
2050
(Projection)
20,578
▼ -39.8%
Change vs. 2020 census
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Other municipalities in Shizuoka (静岡県)
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.
Atami 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 | 50,082 | ▲ +46.4% | Census |
| 1985 | 49,374 | ▲ +44.3% | Census |
| 1990 | 47,291 | ▲ +38.2% | Census |
| 1995 | 45,610 | ▲ +33.3% | Census |
| 2000 | 42,936 | ▲ +25.5% | Census |
| 2005 | 41,202 | ▲ +20.4% | Census |
| 2010 | 39,611 | ▲ +15.8% | Census |
| 2015 | 37,544 | ▲ +9.8% | Census |
| 2020 | 34,208 | — | Census |
| 2025 | 31,330 | ▼ -8.4% | Census |
| 2030 | 29,427 | ▼ -14.0% | Projection |
| 2035 | 27,026 | ▼ -21.0% | Projection |
| 2040 | 24,640 | ▼ -28.0% | Projection |
| 2045 | 22,462 | ▼ -34.3% | Projection |
| 2050 | 20,578 | ▼ -39.8% | Projection |
About Atami
Overview
Atami (熱海市) is a municipality in Shizuoka, Japan, with a population of 31,330 as of 2025.
Population Projection of Atami
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Atami's population is expected to reach 29,427 by 2030 (-14.0%), 24,640 by 2040 (-28.0%), and 20,578 by 2050 (-39.8%). A significant population decline is projected over the next three decades.
Aging Rate of Atami
The aging rate (percentage of residents aged 65 and over) is 48.7% as of 2020 and is projected to rise to 60.2% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Atami's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #727 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #100 out of 1903 nationwide.
- Population size: Ranked #877 out of 1917 nationwide.
- Related: National rankings / All municipalities in Shizuoka
Earnings in Shizuoka (静岡県): Average salary in Shizuoka (静岡県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure