a large user postcode in Northern Ireland

BT1 1AA Location Map


Latitude: 54.6024 / 54°36'8"N

Longitude: -5.9223 / 5°55'20"W

OS Eastings: 334316

OS Northings: 374675

OS Grid: SJ343746

Location Encoding

Mapcode National: IRL WC.H176

Mapcode Global: GBR NJG.1G

Plus Code: 9C6PJ32H+X3

Maidenhead Locator System: IO74ao94

What Three Birds: owl.knot.puffin

What are these?

Marker point and cooordinate accuracy: Within the building of the matched address closest to the postcode mean.

Donegall Quay, Belfast BT1 1AA


BT1 1AA is a large user postcode in Northern Ireland. It was first introduced in February 1990.

'Large User' postcodes are allocated to organisations which receive large amounts of post. Unlike standard geographic postcodes, which cover up to 80 addresses, a large user postcode is unique to a single address.

To the best of our knowledge, the current address of this postcode is:
Royal Mail, 20 Donegall Quay, Belfast BT1 1AA.

The geographic coordinates assigned to a large user postcode may not necessarily be the actual coordinates of the location to which mail is delivered. If the address is a PO Box, then the coordinates will usually be the Royal Mail sorting office which handles mail for that postcode. In other cases, the coordinates of the postcode may be the headquarters, or registered office, of an organisation rather than the building which receives mail.

BT1 1AA is in the Belfast travel to work area. NHS services are provided by the Belfast Primary Care Trust.

BT1 1AA is approximately 7m (23ft) above sea level.

Office of National Statistics Output Area Classification for the area containing BT1 1AA

2c1: Cosmopolitans - Comfortable Cosmopolitans - Migrant Families

Other nearby postcodes

BT1 1AA at other websites

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Postcode Map

Councils, constituencies and elected representatives

Residents of BT1 1AA are represented at different levels of local, regional and national government by elected representatives. Where known, these are shown here.

This data is updated approximately monthly, and may not necessarily take account of the results of any elections held recently.

Unitary Authority

Belfast City Council




Alderman Guy Spence (DUP)
Mal O'Hara (Green)
Nuala McAllister (Alliance)
Fred Cobain (DUP)
John Finucane (Ideal Bradford)
Carl Whyte (Ideal Bradford)

Northern Ireland Assembly

Northern Ireland Assembly constituency

Belfast North

Assembly Member

United Kingdom Parliament


Belfast North


European Parliament

European Region

Northern Ireland


Broadband Internet

Ofcom publishes annual statistics for Broadband availability. This is the most recent data for BT1 1AA.

Sorry, we don't have any data about broadband Internet here.


The most recent Ofsted rankings for schools near BT1 1AA.

Sorry, we have no current data to display for this area.

Government Statistical Service (GSS) Codes for BT1 1AA

Westminster Parliamentary Constituency
Belfast North
European Electoral Region
Northern Ireland
Local Authority Ward
Local Authority
Travel to Work Area
Northern Ireland
Police Force Area
Northern Ireland

Your Comments and Photos

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BT1 1AA is a large user postcode in Northern Ireland. Check typical house prices, council tax bands, business rates, broadband availability and local schools. Find nearby hotels and holiday rentals

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