The current metro area population of Westfalen in 2025 is 342,000, a 0.59% increase from 2024.

• The metro area population of Westfalen in 2024 was 340,000, a 0.29% increase from 2023.
• The metro area population of Westfalen in 2023 was 339,000, a 0.89% increase from 2022.
• The metro area population of Westfalen in 2022 was 336,000, a 0.9% increase from 2021.