Map of BT31 9ND postcode

General information

Postcode	BT31 9ND
Post Town	Castlewellan
Businesses	BRETTSON LTD THE STANDARD MILL LTD

Geography

	Latitude	54.266535
	Longitude	-5.924478
	Easting	144552
	Northing	492763
	Grid reference	SB445927
	UTM reference	30U 309554 6017123
	what3words	treating.gratuity.comforted
	FixPhrase	crumb lividly stagnate unkind
	Plus code	9C6P738G+J6
	Altitude	39 metres (128 feet)
	Sunrise (today)	6:36
	Sunset (today)	20:12
	Distance away
	Distance to sea	4.6 KMs (2.8 miles)

Administrative areas

Ward	Castlewellan	N08001011
District	Newry, Mourne and Down	N09000010
Constituency (2024)	South Down	N05000015
MP	Chris Hazzard	Sinn Féin
Police force	PSNI
Water company	Northern 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

Population (2011)	10
Households (2011)	3
Index of Multiple Deprivation (2019)	455 / 890 Most deprivedLeast deprived
Census output area (2021)	N20003332
Census output area (2011)	5B2
Lower layer super output area (2011)	Castlewellan 2	95NN06S2
Travel to work area	Newry and Banbridge	N12000009

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