The current metro area population of Tainan in 2025 is 881,000, a 0.69% increase from 2024.

• The metro area population of Tainan in 2024 was 875,000, a 0.57% increase from 2023.
• The metro area population of Tainan in 2023 was 870,000, a 0.81% increase from 2022.
• The metro area population of Tainan in 2022 was 863,000, a 0.7% increase from 2021.