The current metro area population of Onitsha in 2025 is 1,767,000, a 4.25% increase from 2024.

• The metro area population of Onitsha in 2024 was 1,695,000, a 4.44% increase from 2023.
• The metro area population of Onitsha in 2023 was 1,623,000, a 4.51% increase from 2022.
• The metro area population of Onitsha in 2022 was 1,553,000, a 4.72% increase from 2021.