The current metro area population of Haimen in 2025 is 715,000, a 2.29% increase from 2024.

• The metro area population of Haimen in 2024 was 699,000, a 2.49% increase from 2023.
• The metro area population of Haimen in 2023 was 682,000, a 2.71% increase from 2022.
• The metro area population of Haimen in 2022 was 664,000, a 2.79% increase from 2021.