The current metro area population of Udon Thani in 2025 is 604,000, a 1.17% increase from 2024.

• The metro area population of Udon Thani in 2024 was 597,000, a 1.19% increase from 2023.
• The metro area population of Udon Thani in 2023 was 590,000, a 1.2% increase from 2022.
• The metro area population of Udon Thani in 2022 was 583,000, a 1.04% increase from 2021.