The current metro area population of Westfalen in 2026 is 343,000, a 0.29% increase from 2025.

• The metro area population of Westfalen in 2025 was 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.