Ibaraki茨城県
Kasumigaura かすみがうら市
Data last updated:
Kasumigaura, Ibaraki, Japan has a population of 38,396 (2025 national census). IPSS projections estimate 36,261 by 2030 and 27,514 by 2050 (a decrease of about 31.4% from 2020), with the share of residents aged 65+ rising from 31.9% in 2020 to 43.9%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025년
(실적)
38,396명
2030년
(추계)
36,261명
▼ -9.5%
2040년
(추계)
31,915명
▼ -20.4%
2050년
(추계)
27,514명
▼ -31.4%
Change vs. 2020 census
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Ibaraki (茨城県)의 다른 시구정촌
데이터 출처
- 일본 정부 통계 종합 포털(e-Stat)（https://www.e-stat.go.jp/）
- 국립사회보장・인구문제연구소 「일본의 지역별 장래추계인구(레이와 5년 추계)」
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Kasumigaura 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 | 38,797 | ▼ -3.2% | Census |
| 1985 | 41,306 | ▲ +3.0% | Census |
| 1990 | 43,013 | ▲ +7.3% | Census |
| 1995 | 45,288 | ▲ +13.0% | Census |
| 2000 | 45,229 | ▲ +12.8% | Census |
| 2005 | 44,603 | ▲ +11.3% | Census |
| 2010 | 43,553 | ▲ +8.6% | Census |
| 2015 | 42,147 | ▲ +5.1% | Census |
| 2020 | 40,087 | — | Census |
| 2025 | 38,396 | ▼ -4.2% | Census |
| 2030 | 36,261 | ▼ -9.5% | Projection |
| 2035 | 34,142 | ▼ -14.8% | Projection |
| 2040 | 31,915 | ▼ -20.4% | Projection |
| 2045 | 29,660 | ▼ -26.0% | Projection |
| 2050 | 27,514 | ▼ -31.4% | Projection |
About Kasumigaura
Overview
Kasumigaura (かすみがうら市) is a municipality in Ibaraki, Japan, with a population of 38,396 as of 2025.
Population Projection of Kasumigaura
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kasumigaura's population is expected to reach 36,261 by 2030 (-9.5%), 31,915 by 2040 (-20.4%), and 27,514 by 2050 (-31.4%). A significant population decline is projected over the next three decades.
Aging Rate of Kasumigaura
The aging rate (percentage of residents aged 65 and over) is 31.9% as of 2020 and is projected to rise to 43.9% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Kasumigaura's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1015 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #957 out of 1903 nationwide.
- Population size: Ranked #795 out of 1917 nationwide.
- Related: National rankings / All municipalities in Ibaraki
Ibaraki (茨城県)의 소득 수준: Ibaraki (茨城県)의 평균 연봉(연령·성별·기업 규모별)jpsalary / 후생노동성 임금구조 기본통계조사