Kagawa香川県
Mitoyo 三豊市
Data last updated:
Mitoyo, Kagawa, Japan has a population of 56,254 (2025 national census). IPSS projections estimate 54,472 by 2030 and 40,383 by 2050 (a decrease of about 34.7% from 2020), with the share of residents aged 65+ rising from 36.6% in 2020 to 44.5%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025Census
56,254
2030Projection
54,472
▼ -11.9%
2040Projection
47,246
▼ -23.6%
2050Projection
40,383
▼ -34.7%
Change vs. 2020 census
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Other municipalities in Kagawa (香川県)
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.
Mitoyo 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 | 77,939 | ▲ +26.0% | Census |
| 1985 | 78,282 | ▲ +26.6% | Census |
| 1990 | 77,284 | ▲ +24.9% | Census |
| 1995 | 75,845 | ▲ +22.6% | Census |
| 2000 | 73,494 | ▲ +18.8% | Census |
| 2005 | 71,180 | ▲ +15.1% | Census |
| 2010 | 68,512 | ▲ +10.8% | Census |
| 2015 | 65,524 | ▲ +5.9% | Census |
| 2020 | 61,857 | — | Census |
| 2025 | 56,254 | ▼ -9.1% | Census |
| 2030 | 54,472 | ▼ -11.9% | Projection |
| 2035 | 50,838 | ▼ -17.8% | Projection |
| 2040 | 47,246 | ▼ -23.6% | Projection |
| 2045 | 43,721 | ▼ -29.3% | Projection |
| 2050 | 40,383 | ▼ -34.7% | Projection |
About Mitoyo
Overview
Mitoyo (三豊市) is a municipality in Kagawa, Japan, with a population of 56,254 as of 2025.
Population Projection of Mitoyo
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Mitoyo's population is expected to reach 54,472 by 2030 (-11.9%), 47,246 by 2040 (-23.6%), and 40,383 by 2050 (-34.7%). A significant population decline is projected over the next three decades.
Aging Rate of Mitoyo
The aging rate (percentage of residents aged 65 and over) is 36.6% as of 2020 and is projected to rise to 44.5% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Mitoyo's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #903 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #916 out of 1903 nationwide.
- Population size: Ranked #632 out of 1917 nationwide.
- Related: National rankings / All municipalities in Kagawa
Earnings in Kagawa (香川県): Average salary in Kagawa (香川県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure