Fukushima福島県
Iwaki いわき市
Data last updated:
Iwaki, Fukushima, Japan has a population of 306,165 (2025 national census). IPSS projections estimate 332,931 by 2030 and 332,931 by 2050 (an increase of about 0.0% from 2020), with the share of residents aged 65+ rising from 30.7% in 2020 to 0.0%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
306,165
2030
(Projection)
332,931
→ 0.0%
2040
(Projection)
332,931
→ 0.0%
2050
(Projection)
332,931
→ 0.0%
Change vs. 2020 census
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Other municipalities in Fukushima (福島県)
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.
Iwaki Population Table (1980–2025)
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 | 342,074 | ▲ +2.7% | Census |
| 1985 | 350,569 | ▲ +5.3% | Census |
| 1990 | 355,812 | ▲ +6.9% | Census |
| 1995 | 360,598 | ▲ +8.3% | Census |
| 2000 | 360,138 | ▲ +8.2% | Census |
| 2005 | 354,492 | ▲ +6.5% | Census |
| 2010 | 342,249 | ▲ +2.8% | Census |
| 2015 | 350,237 | ▲ +5.2% | Census |
| 2020 | 332,931 | — | Census |
| 2025 | 306,165 | ▼ -8.0% | Census |
About Iwaki
Overview
Iwaki (いわき市) is a municipality in Fukushima, Japan, with a population of 306,165 as of 2025.
Population Projection of Iwaki
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Iwaki's population is expected to reach 332,931 by 2030 (0.0%), 332,931 by 2040 (0.0%), and 332,931 by 2050 (0.0%). A modest population change is expected.
Aging Rate of Iwaki
The aging rate (percentage of residents aged 65 and over) is 30.7% as of 2020 and is projected to rise to 0.0% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Iwaki's demographic trajectory is similar to the national average.
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