Aichi愛知県
Ichinomiya 一宮市
Data last updated:
Ichinomiya, Aichi, Japan has a population of 368,788 (2025 national census). IPSS projections estimate 361,238 by 2030 and 321,749 by 2050 (a decrease of about 15.3% from 2020), with the share of residents aged 65+ rising from 27.6% in 2020 to 38.0%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025Census
368,788
2030Projection
361,238
▼ -5.0%
2040Projection
342,345
▼ -9.9%
2050Projection
321,749
▼ -15.3%
Change vs. 2020 census
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Other municipalities in Aichi (愛知県)
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.
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 | 335,465 | ▼ -11.7% | Census |
| 1985 | 341,384 | ▼ -10.2% | Census |
| 1990 | 346,972 | ▼ -8.7% | Census |
| 1995 | 353,999 | ▼ -6.9% | Census |
| 2000 | 362,726 | ▼ -4.6% | Census |
| 2005 | 371,687 | ▼ -2.2% | Census |
| 2010 | 378,566 | ▼ -0.4% | Census |
| 2015 | 380,868 | ▲ +0.2% | Census |
| 2020 | 380,073 | — | Census |
| 2025 | 368,788 | ▼ -3.0% | Census |
| 2030 | 361,238 | ▼ -5.0% | Projection |
| 2035 | 352,162 | ▼ -7.3% | Projection |
| 2040 | 342,345 | ▼ -9.9% | Projection |
| 2045 | 332,241 | ▼ -12.6% | Projection |
| 2050 | 321,749 | ▼ -15.3% | Projection |
About Ichinomiya
Overview
Ichinomiya (一宮市) is a municipality in Aichi, Japan, with a population of 368,788 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 361,238 by 2030 (-5.0%), 342,345 by 2040 (-9.9%), and 321,749 by 2050 (-15.3%). A modest population change is expected.
Aging Rate of Ichinomiya
The aging rate (percentage of residents aged 65 and over) is 27.6% as of 2020 and is projected to rise to 38.0% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Ichinomiya's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1473 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1403 out of 1903 nationwide.
- Population size: Ranked #61 out of 1917 nationwide.
- Related: National rankings / All municipalities in Aichi
Earnings in Aichi (愛知県): Average salary in Aichi (愛知県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure