The postal-codes of Castlerock is BT51. The City of Castlerock is in County Londonderry. The country of County Londonderry is Northern Ireland (NIR)
The castlerock postcode region (AB) contains 34 unique 'outward' codes. castlerock is the main postal town or district for this region, with all castlerock postcodes starting with the following outward codes.
This page contains a list of postcodes for castlerock area. Select a castlerock postcode to see the map location, demographics, house prices, local information, tourist guides and statistics:
There are a number of local information, guides and useful data to browse and explore, whether you're a castlerock resident or a visitor to the castlerock area.