The current metro area population of Wonsan in 2026 is 369,000, a 0.82% increase from 2025.

• The metro area population of Wonsan in 2025 was 366,000, a 0.83% increase from 2024.
• The metro area population of Wonsan in 2024 was 363,000, a 0.83% increase from 2023.
• The metro area population of Wonsan in 2023 was 360,000, a 0.56% increase from 2022.