The current metro area population of Cheonan in 2025 is 713,000, a 0.56% increase from 2024.

• The metro area population of Cheonan in 2024 was 709,000, a 0.85% increase from 2023.
• The metro area population of Cheonan in 2023 was 703,000, a 1.01% increase from 2022.
• The metro area population of Cheonan in 2022 was 696,000, a 1.02% increase from 2021.