Map of BT31 9NL postcode

General information
Postcode BT31 9NL
Post Town Castlewellan
Businesses
Geography
Latitude 54.263705
Longitude -5.917222
Easting 145007
Northing 492422
Grid reference SB450924
UTM reference 30U 310014 6016789
what3words bless.onto.health
FixPhrase crumb lividly squander untrue
Plus code 9C6P737M+F4
Altitude 39 metres (129 feet)
Sunrise (today) 6:36
Sunset (today) 20:12
Distance away
Distance to sea 4 KMs (2.5 miles)
Administrative areas
Ward Dundrum N08001021
District Newry, Mourne and Down N09000010
Constituency (2024) South Down N05000015
MPChris HazzardSinn Féin
Police forcePSNI
Water companyNorthern Ireland Water
NUTS/ITL 3 Newry, Mourne and Down
NUTS/ITL 2 Northern Ireland
NUTS/ITL 1 Northern Ireland
Country Northern Ireland N92000002
Data
Date introduced December 1984
Last updated September 2025
User type Small (addresses receive less than 25 items of mail per day)
Quality Within the building of the matched address closest to the postcode mean
Demographics
Index of Multiple Deprivation (2019)
321 / 890
Most deprivedLeast deprived
Census output area (2021)N20003343
Census output area (2011)1A1
Lower layer super output area (2011)Dundrum95NN12W1
Travel to work areaBelfastN12000002
Contains OS data © Crown copyright and database right 2025
Contains Royal Mail data © Royal Mail copyright and database right 2025
Contains National Statistics data © Crown copyright and database rights 2025
Source: Office for National Statistics licensed under the Open Government Licence v.3.0
Contains data from Wikipedia covered by the Creative Commons license