Ibaraki茨城県
Hitachioota 常陸太田市
Data last updated:
Hitachioota, Ibaraki, Japan has a population of 43,769 (2025 national census). IPSS projections estimate 40,457 by 2030 and 25,696 by 2050 (a decrease of about 47.1% from 2020), with the share of residents aged 65+ rising from 38.7% in 2020 to 56.1%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
43,769
2030
(Projection)
40,457
▼ -16.8%
2040
(Projection)
32,953
▼ -32.2%
2050
(Projection)
25,696
▼ -47.1%
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.
Hitachioota 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 | 59,503 | ▲ +22.4% | Census |
| 1985 | 59,273 | ▲ +22.0% | Census |
| 1990 | 59,758 | ▲ +23.0% | Census |
| 1995 | 61,525 | ▲ +26.6% | Census |
| 2000 | 61,869 | ▲ +27.3% | Census |
| 2005 | 59,802 | ▲ +23.0% | Census |
| 2010 | 56,250 | ▲ +15.7% | Census |
| 2015 | 52,294 | ▲ +7.6% | Census |
| 2020 | 48,602 | — | Census |
| 2025 | 43,769 | ▼ -9.9% | Census |
| 2030 | 40,457 | ▼ -16.8% | Projection |
| 2035 | 36,706 | ▼ -24.5% | Projection |
| 2040 | 32,953 | ▼ -32.2% | Projection |
| 2045 | 29,280 | ▼ -39.8% | Projection |
| 2050 | 25,696 | ▼ -47.1% | Projection |
About Hitachioota
Overview
Hitachioota (常陸太田市) is a municipality in Ibaraki, Japan, with a population of 43,769 as of 2025.
Population Projection of Hitachioota
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Hitachioota's population is expected to reach 40,457 by 2030 (-16.8%), 32,953 by 2040 (-32.2%), and 25,696 by 2050 (-47.1%). A significant population decline is projected over the next three decades.
Aging Rate of Hitachioota
The aging rate (percentage of residents aged 65 and over) is 38.7% as of 2020 and is projected to rise to 56.1% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Hitachioota is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #445 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #232 out of 1903 nationwide.
- Population size: Ranked #742 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