The current metro area population of Allentown in 2026 is 808,000, a 1% increase from 2025.

• The metro area population of Allentown in 2025 was 800,000, a 0.88% increase from 2024.
• The metro area population of Allentown in 2024 was 793,000, a 1.02% increase from 2023.
• The metro area population of Allentown in 2023 was 785,000, a 1.03% increase from 2022.