Population of Belfast, United Kingdom as of July 2025. How many people live in Belfast today?

The exact population of Belfast as of July 2025 is estimated at 671,559 residents. Please note: this figure is an estimate and may slightly change as people get born and pass away, it also depends on migration to/from Belfast.

Check out more data on population in United Kingdom:

• Blackfield
• Ringwood
• Yateley
• Petersfield
• Lymington
• South Hayling
• Tadley