Belfast Population 2026
Belfast has a population of 348,005, making it the #13 biggest city in 🇬🇧 United Kingdom, located in Northern Ireland. Roughly 0.5% of United Kingdom's population lives here. It is about 26× smaller than London, the country's biggest city.
Population (city proper)
348,005
Rank in United Kingdom
#13
Coordinates
54.60°N, 5.93°W
~7 m elevation · Europe/London
Distance to capital (London)
518 km
322 miles, straight line
Other big cities in Northern Ireland
| City | Population | Rank in United Kingdom |
|---|---|---|
| Derry | 83,652 | #127 |
| Lisburn | 77,506 | #140 |
| Newtownabbey | 63,860 | #174 |
| Bangor | 61,011 | #189 |
| Craigavon | 59,236 | #196 |
| Castlereagh | 56,679 | #206 |
| Portadown | 32,926 | #378 |
| Newtownards | 29,363 | #422 |
Cities near Belfast
- Castlereagh56,679 people · ~4 km away
- Newtownabbey63,860 people · ~7 km away
- Lisburn77,506 people · ~11 km away
- Newtownards29,363 people · ~15 km away
- Carrickfergus29,208 people · ~15 km away
- Bangor61,011 people · ~18 km away
FAQ
What is the population of Belfast?
Belfast has a population of 348,005 (city proper, latest official figure via GeoNames), making it the #13 biggest city in United Kingdom.
What region is Belfast in?
Belfast is located in Northern Ireland, United Kingdom.
Is Belfast the capital of United Kingdom?
No, the capital of United Kingdom is London, about 518 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.
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