Ibaraki茨城県
Hitachi 日立市
Data last updated:
Hitachi, Ibaraki, Japan has a population of 158,681 (2025 national census). IPSS projections estimate 149,141 by 2030 and 104,391 by 2050 (a decrease of about 40.2% from 2020), with the share of residents aged 65+ rising from 32.9% in 2020 to 48.7%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
158,681
2030
(Projection)
149,141
▼ -14.5%
2040
(Projection)
125,845
▼ -27.9%
2050
(Projection)
104,391
▼ -40.2%
Change vs. 2020 census
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Other municipalities in Ibaraki (茨城県)
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.
Hitachi 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 | 215,498 | ▲ +23.5% | Census |
| 1985 | 218,111 | ▲ +25.0% | Census |
| 1990 | 215,069 | ▲ +23.2% | Census |
| 1995 | 212,304 | ▲ +21.7% | Census |
| 2000 | 206,589 | ▲ +18.4% | Census |
| 2005 | 199,218 | ▲ +14.2% | Census |
| 2010 | 193,129 | ▲ +10.7% | Census |
| 2015 | 185,054 | ▲ +6.0% | Census |
| 2020 | 174,508 | — | Census |
| 2025 | 158,681 | ▼ -9.1% | Census |
| 2030 | 149,141 | ▼ -14.5% | Projection |
| 2035 | 137,328 | ▼ -21.3% | Projection |
| 2040 | 125,845 | ▼ -27.9% | Projection |
| 2045 | 114,894 | ▼ -34.2% | Projection |
| 2050 | 104,391 | ▼ -40.2% | Projection |
About Hitachi
Overview
Hitachi (日立市) is a municipality in Ibaraki, Japan, with a population of 158,681 as of 2025.
Population Projection of Hitachi
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Hitachi's population is expected to reach 149,141 by 2030 (-14.5%), 125,845 by 2040 (-27.9%), and 104,391 by 2050 (-40.2%). A significant population decline is projected over the next three decades.
Aging Rate of Hitachi
The aging rate (percentage of residents aged 65 and over) is 32.9% as of 2020 and is projected to rise to 48.7% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Hitachi is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #713 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #650 out of 1903 nationwide.
- Population size: Ranked #244 out of 1917 nationwide.
- Related: National rankings / All municipalities in Ibaraki
Earnings in Ibaraki (茨城県): Average salary in Ibaraki (茨城県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure