The current metro area population of Calamba in 2026 is 608,000, a 2.18% increase from 2025.

• The metro area population of Calamba in 2025 was 595,000, a 2.41% increase from 2024.
• The metro area population of Calamba in 2024 was 581,000, a 2.29% increase from 2023.
• The metro area population of Calamba in 2023 was 568,000, a 2.53% increase from 2022.