Fukushima福島県
Kagamiishi 鏡石町
Data last updated:
Kagamiishi, Fukushima, Japan has a population of 12,009 (2025 national census). IPSS projections estimate 11,499 by 2030 and 9,333 by 2050 (a decrease of about 24.2% from 2020), with the share of residents aged 65+ rising from 27.9% in 2020 to 39.4%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
12,009
2030
(Projection)
11,499
▼ -6.6%
2040
(Projection)
10,494
▼ -14.8%
2050
(Projection)
9,333
▼ -24.2%
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.
Kagamiishi 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 | 11,437 | ▼ -7.2% | Census |
| 1985 | 11,883 | ▼ -3.5% | Census |
| 1990 | 12,130 | ▼ -1.5% | Census |
| 1995 | 12,378 | ▲ +0.5% | Census |
| 2000 | 12,743 | ▲ +3.5% | Census |
| 2005 | 12,746 | ▲ +3.5% | Census |
| 2010 | 12,815 | ▲ +4.0% | Census |
| 2015 | 12,486 | ▲ +1.4% | Census |
| 2020 | 12,318 | — | Census |
| 2025 | 12,009 | ▼ -2.5% | Census |
| 2030 | 11,499 | ▼ -6.6% | Projection |
| 2035 | 11,008 | ▼ -10.6% | Projection |
| 2040 | 10,494 | ▼ -14.8% | Projection |
| 2045 | 9,936 | ▼ -19.3% | Projection |
| 2050 | 9,333 | ▼ -24.2% | Projection |
About Kagamiishi
Overview
Kagamiishi (鏡石町) is a municipality in Fukushima, Japan, with a population of 12,009 as of 2025.
Population Projection of Kagamiishi
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kagamiishi's population is expected to reach 11,499 by 2030 (-6.6%), 10,494 by 2040 (-14.8%), and 9,333 by 2050 (-24.2%). A significant population decline is projected over the next three decades.
Aging Rate of Kagamiishi
The aging rate (percentage of residents aged 65 and over) is 27.9% as of 2020 and is projected to rise to 39.4% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Kagamiishi's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1232 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1308 out of 1903 nationwide.
- Population size: Ranked #1287 out of 1917 nationwide.
- Related: National rankings / All municipalities in Fukushima
Earnings in Fukushima (福島県): Average salary in Fukushima (福島県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure