The current metro area population of Longhai in 2025 is 736,000, a 2.36% increase from 2024.

• The metro area population of Longhai in 2024 was 719,000, a 2.86% increase from 2023.
• The metro area population of Longhai in 2023 was 699,000, a 3.1% increase from 2022.
• The metro area population of Longhai in 2022 was 678,000, a 3.51% increase from 2021.