The current metro area population of Birkenhead in 2025 is 336,000, a 0.6% increase from 2024.

• The metro area population of Birkenhead in 2024 was 334,000, a 0.6% increase from 2023.
• The metro area population of Birkenhead in 2023 was 332,000, a 0.3% increase from 2022.
• The metro area population of Birkenhead in 2022 was 331,000, a 0.3% increase from 2021.