The current metro area population of Ansan in 2025 is 771,000, a 0.26% increase from 2024.

• The metro area population of Ansan in 2024 was 769,000, a 0.26% increase from 2023.
• The metro area population of Ansan in 2023 was 767,000, a 0.26% increase from 2022.
• The metro area population of Ansan in 2022 was 765,000, a 0.26% increase from 2021.