Map of Castlereagh, United Kingdom
Castlereagh is a city in Northern Ireland, United Kingdom, with a population of about 56,679. It lies at 54.5735°N, 5.8847°W. Castlereagh is about 514 km (319 mi) northwest of London, the capital. The nearest city on our map is Belfast, 4 km to the northwest.
Castlereagh at a glance
Country
Region
Northern Ireland
Population
56,679GeoNames
Coordinates
54.5735, -5.884754°34′25″N 5°53′05″W
Time zone
Europe/LondonUTC+00:00 / UTC+01:00 (daylight saving time)
Local time
–
Distance to London
514 km (319 mi)
Where is Castlereagh?
- The 7th largest city in Northern Ireland on this site.
- Located in the Northern and Western hemispheres.
- Daylight ranges from about 7 h 15 min on the shortest day to 17 h 16 min on the longest day (around 21 December and 21 June).
Cities near Castlereagh
- Belfast — 4 km northwest
- Newtownabbey — 10 km north
- Lisburn — 11 km southwest
- Bangor — 17 km northeast
- Craigavon — 35 km southwest
- Dundalk — 73 km southwest, Ireland
- Peel — 87 km southeast, Isle of Man
- Port Erin — 91 km southeast, Isle of Man
- Castletown — 97 km southeast, Isle of Man
- Drogheda — 100 km south, Ireland
Largest cities in Northern Ireland
- Belfast — 348,005
- Derry — 83,652
- Lisburn — 77,506
- Newtownabbey — 63,860
- Bangor — 61,011
- Craigavon — 59,236
Largest cities in United Kingdom
- London — 8,961,989
- Birmingham — 1,157,603
- Glasgow — 626,410
- Manchester — 568,996
- Sheffield — 556,500
- Leeds — 536,280
- Edinburgh — 514,990
- Liverpool — 496,770
- Bristol — 479,024
- Cardiff — 372,089
Map of United Kingdom and all its cities →
Sources: place names, coordinates, populations and time zones from GeoNames (CC BY 4.0, data retrieved October 2026). Population figures are the latest values recorded in GeoNames; depending on the country they refer to the city proper, a municipality or a wider urban area, so they can differ from census or metro-area figures. Map © OpenStreetMap contributors.