The current metro area population of Belfast in 2025 is 652,000, a 0.77% increase from 2024.

• The metro area population of Belfast in 2024 was 647,000, a 0.62% increase from 2023.
• The metro area population of Belfast in 2023 was 643,000, a 0.63% increase from 2022.
• The metro area population of Belfast in 2022 was 639,000, a 0.63% increase from 2021.