The current metro area population of Seoul in 2026 is 10,050,000, a 0.24% increase from 2025.

• The metro area population of Seoul in 2025 was 10,026,000, a 0.21% increase from 2024.
• The metro area population of Seoul in 2024 was 10,005,000, a 0.17% increase from 2023.
• The metro area population of Seoul in 2023 was 9,988,000, a 0.12% increase from 2022.