Iwaki, Japan Metro Area Population (1950-2026)
The current metro area population of Iwaki in 2026 is 353,000, a 0.28% decline from 2025.
- The metro area population of Iwaki in 2025 was 354,000, a 0.28% decline from 2024.
- The metro area population of Iwaki in 2024 was 355,000, a 0.28% decline from 2023.
- The metro area population of Iwaki in 2023 was 356,000, a 0% increase from 2022.
The full historical dataset is available for download here: Iwaki, Japan Metro Population | Historical Data | 1950-2026.