Gunma群馬県
Midori みどり市
Data last updated:
Midori, Gunma, Japan has a population of 47,420 (2025 national census). IPSS projections estimate 45,165 by 2030 and 35,731 by 2050 (a decrease of about 28.0% from 2020), with the share of residents aged 65+ rising from 30.1% in 2020 to 43.5%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
47,420
2030
(Projection)
45,165
▼ -9.0%
2040
(Projection)
40,587
▼ -18.3%
2050
(Projection)
35,731
▼ -28.0%
Change vs. 2020 census
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Other municipalities in Gunma (群馬県)
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.
Midori 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 | 44,064 | ▼ -11.2% | Census |
| 1985 | 46,743 | ▼ -5.9% | Census |
| 1990 | 49,502 | ▼ -0.3% | Census |
| 1995 | 50,983 | ▲ +2.7% | Census |
| 2000 | 51,266 | ▲ +3.3% | Census |
| 2005 | 52,115 | ▲ +5.0% | Census |
| 2010 | 51,899 | ▲ +4.5% | Census |
| 2015 | 50,906 | ▲ +2.5% | Census |
| 2020 | 49,648 | — | Census |
| 2025 | 47,420 | ▼ -4.5% | Census |
| 2030 | 45,165 | ▼ -9.0% | Projection |
| 2035 | 42,935 | ▼ -13.5% | Projection |
| 2040 | 40,587 | ▼ -18.3% | Projection |
| 2045 | 38,183 | ▼ -23.1% | Projection |
| 2050 | 35,731 | ▼ -28.0% | Projection |
About Midori
Overview
Midori (みどり市) is a municipality in Gunma, Japan, with a population of 47,420 as of 2025.
Population Projection of Midori
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Midori's population is expected to reach 45,165 by 2030 (-9.0%), 40,587 by 2040 (-18.3%), and 35,731 by 2050 (-28.0%). A significant population decline is projected over the next three decades.
Aging Rate of Midori
The aging rate (percentage of residents aged 65 and over) is 30.1% as of 2020 and is projected to rise to 43.5% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Midori's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1120 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #983 out of 1903 nationwide.
- Population size: Ranked #701 out of 1917 nationwide.
- Related: National rankings / All municipalities in Gunma
Earnings in Gunma (群馬県): Average salary in Gunma (群馬県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure