What is the population of Castlereagh?

The population of Castlereagh is 56,679.

Where is Castlereagh located?

Castlereagh is located at latitude 54.5735000 and longitude -5.8847200. It is in United Kingdom.

The area of Castlereagh is 85 km².

Castlereagh is in the Europe/London time zone.

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Castlereagh: local government district in Northern Ireland

Population	56,679
Country	United Kingdom
State	Northern Ireland (United Kingdom)
County	City of Belfast
Area	85 km²
Latitude & Longitude	54.5735,-5.8847
Time Zone	Europe/London
Local time	20:13:11 (19th April 2026)

Castlereagh is located at 54°34'25"N 5°53'5"W (54.5735000, -5.8847200).

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Official website of Castlereagh

Official Website

An Caislean Riabhach, An Caisleán Riabhach