The current metro area population of Kottayam in 2025 is 885,000, a 3.63% increase from 2024.

• The metro area population of Kottayam in 2024 was 854,000, a 4.27% increase from 2023.
• The metro area population of Kottayam in 2023 was 819,000, a 5% increase from 2022.
• The metro area population of Kottayam in 2022 was 780,000, a 5.55% increase from 2021.