The current metro area population of Longkou in 2025 is 589,000, a 2.08% increase from 2024.

• The metro area population of Longkou in 2024 was 577,000, a 2.3% increase from 2023.
• The metro area population of Longkou in 2023 was 564,000, a 2.55% increase from 2022.
• The metro area population of Longkou in 2022 was 550,000, a 2.8% increase from 2021.