Chiba千葉県
Ichinomiya 一宮町
Data last updated:
Ichinomiya, Chiba, Japan has a population of 11,763 (2025 national census). IPSS projections estimate 11,738 by 2030 and 11,291 by 2050 (a decrease of about 5.1% from 2020), with the share of residents aged 65+ rising from 33.2% in 2020 to 41.2%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
11,763
2030
(Projection)
11,738
▼ -1.3%
2040
(Projection)
11,527
▼ -3.1%
2050
(Projection)
11,291
▼ -5.1%
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.
Ichinomiya 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 | 10,486 | ▼ -11.9% | Census |
| 1985 | 10,997 | ▼ -7.6% | Census |
| 1990 | 11,135 | ▼ -6.4% | Census |
| 1995 | 11,302 | ▼ -5.0% | Census |
| 2000 | 11,648 | ▼ -2.1% | Census |
| 2005 | 11,656 | ▼ -2.0% | Census |
| 2010 | 12,034 | ▲ +1.2% | Census |
| 2015 | 11,767 | ▼ -1.1% | Census |
| 2020 | 11,897 | — | Census |
| 2025 | 11,763 | ▼ -1.1% | Census |
| 2030 | 11,738 | ▼ -1.3% | Projection |
| 2035 | 11,628 | ▼ -2.3% | Projection |
| 2040 | 11,527 | ▼ -3.1% | Projection |
| 2045 | 11,423 | ▼ -4.0% | Projection |
| 2050 | 11,291 | ▼ -5.1% | Projection |
About Ichinomiya
Overview
Ichinomiya (一宮町) is a municipality in Chiba, Japan, with a population of 11,763 as of 2025.
Population Projection of Ichinomiya
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Ichinomiya's population is expected to reach 11,738 by 2030 (-1.3%), 11,527 by 2040 (-3.1%), and 11,291 by 2050 (-5.1%). A modest population change is expected.
Aging Rate of Ichinomiya
The aging rate (percentage of residents aged 65 and over) is 33.2% as of 2020 and is projected to rise to 41.2% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Ichinomiya's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1720 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1150 out of 1903 nationwide.
- Population size: Ranked #1294 out of 1917 nationwide.
- Related: National rankings / All municipalities in Chiba
Earnings in Chiba (千葉県): Average salary in Chiba (千葉県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure