Dublin postal districts have been used by Ireland's postal service, known as An Post, to sort mail in Dublin. The system is similar to that used in cities in Europe and North America until they adopted national postal code systems in the 1960s and 1970s. These were incorporated into a new national postcode system, known as Eircode, which was implemented in 2015. Under the Eircode system, the city is covered by the original routing areas D01 to D24, along with A## and K## codes for locations elsewhere in the Dublin Region.
The postal district system was introduced in 1917 by the British government, as a practical way to organise local postal distribution. This followed the example of other cities, including London, first subdivided into ten districts in 1857, and Liverpool, the first city in Britain or Ireland to have postcodes, from 1864. The letter "D" was assigned to designate Dublin. The new Irish government retained the postal district system, but district numbers were not used by the public until 1961, when they were added to street signs. Prior to 1961, street signs only displayed the street name in Irish and English.
The number of districts was increased as the city grew, and in the 1970s, large districts were subdivided. Dublin 5 was split, with the coastal part retaining the "5" and the inland part becoming Dublin 17. Dublin 8, Ballyfermot became Dublin 10, along with Palmerstown and Chapelizod. However, Dublin 10 was subsequently split again, with Palmerstown and Chapelizod forming Dublin 20.
In 1985, Dublin 6 was divided, with some areas, such as Templeogue, Kimmage and Terenure becoming part of a new district in order to facilitate processing of mail by a new delivery office for those areas. Residents of some areas objected to the assignation of the next available number, "Dublin 26," for the new postal district, citing property devaluation: the higher numbered districts typically represented less affluent and less central areas. An Post ultimately relented, and the western part of the district became known as Dublin 6W.
The postal district appears with one or two digits (or in the case of one district, a digit and a letter) appearing at the end of addresses, e.g.:
Sample Address, Sample Street, Dublin 8
Under the later Eircode postcode system, the postal district number is still retained in Dublin addresses, even though this information is also contained in the "Locator code" portion of the Eircode postcodes, e.g.:
Sample Address, Sample Street, Dublin 8, D08 1X2Y
In most cases, odd numbers are used for addresses on the Northside of the River Liffey, while even numbers are on addresses on the Southside. Exceptions to this are the Phoenix Park (along with a small area between the Park and the River Liffey), and Chapelizod Village which, although on the Northside, are parts of the Dublin 8 and Dublin 20 postal districts respectively.
The numbering system is not used for some areas in County Dublin, such as Dún Laoghaire, Blackrock, Lucan or Swords, though it is used for other county locations, for example Firhouse, Foxrock, Kilshane, Knocklyon and Tallaght.
|Dublin's postal districts|
|Northside, covering local government area||Southside, covering local government area|
|Dublin 1 (D1) Dublin||Dublin 2 (D2) Dublin|
|Dublin 3 (D3) Dublin||Dublin 4 (D4) Dublin, Dun Laoghaire Rathdown|
|Dublin 5 (D5) Dublin||Dublin 6 (D6) Dublin, Dún Laoghaire Rathdown|
|Dublin 7 (D7) Dublin||Dublin 6W (D6W) Dublin, South Dublin|
|Dublin 9 (D9) Dublin||Dublin 8 (D8) Dublin|
|Dublin 11 (D11) Dublin, Fingal||Dublin 10 (D10) Dublin|
|Dublin 13 (D13) Dublin, Fingal||Dublin 12 (D12) Dublin|
|Dublin 15 (D15) Fingal||Dublin 14 (D14) Dublin, Dún Laoghaire–Rathdown, South Dublin|
|Dublin 17 (D17) Dublin, Fingal||Dublin 16 (D16) Dún Laoghaire–Rathdown, South Dublin|
|Dublin 18 (D18) Dún Laoghaire–Rathdown|
|Dublin 20 (D20) Dublin, South Dublin|
|Dublin 22 (D22) South Dublin|
|Dublin 24 (D24) South Dublin|
|"County Dublin"; Fingal, South Dublin, Dún Laoghaire–Rathdown, and small pockets of Meath|
The districts, and the main areas and streets they contain, include:
- Dublin 1 includes most of the north inner city, including Abbey Street, Amiens Street, Capel Street, Dorset Street, Henry Street and Mary Street, Mountjoy Square, Marlborough Street, North Wall, O'Connell Street, Parnell Square, and Talbot Street. This area include the General Post Office, from which distances are measured.
- Dublin 2 encompasses most of the city centre south of the River Liffey and takes in areas around Merrion Square, Trinity College, Temple Bar, Grafton Street, St Stephen's Green, Dame Street, and Leeson Street. Dublin 2 is the location of a number of government departments and addresses such as Leinster House, Government Buildings, and the Mansion House. The borders of Dublin 2 are the Liffey in the north, the Grand Canal to the south and east and Aungier, Wexford and Camden Streets to the west.
- Dublin 3 encompasses areas such as Ballybough, North Strand, Clonliffe, Clontarf, Dollymount, East Wall (including East Point), Fairview, most of Killester, and Marino.
- Dublin 4 includes Ballsbridge, Belfield, Donnybrook, Irishtown, Merrion, Pembroke, Ringsend and Sandymount and contains the RDS grounds, Lansdowne Road stadium, and many embassies. "D4" has acquired its own socio-economic identity.
- Dublin 5 includes most of Artane, central Coolock, Harmonstown, Kilbarrack, and Raheny.
- Dublin 6 includes Milltown, Ranelagh, parts of Terenure, Rathmines (including Dartry), and Rathgar.
- Dublin 6W includes Harold's Cross, Templeogue, Kimmage and Terenure.
- Dublin 7 includes Arbour Hill, some parts of Ashtown, Broadstone, Cabra, Grangegorman, Oxmantown, Phibsboro, Smithfield, Stoneybatter.
- Dublin 8 includes Dolphin's Barn, Inchicore, Islandbridge, Kilmainham, Merchants Quay, Portobello, South Circular Road, the Phoenix Park and the Liberties. Notable buildings include Christchurch Cathedral and St. Patrick's Cathedral. It is one of only two postal districts to span the Liffey.
- Dublin 9 includes parts of Ballymun east of Ballymun Road (Shangan and Coultry), Beaumont, Donnycarney, Drumcondra, Elm Mount, Griffith Avenue, parts of Glasnevin (St Mobhi, Botanic Gardens and Met Éireann), Santry, and Whitehall.
- Dublin 10 includes Ballyfermot and Cherry Orchard.
- Dublin 11 includes most of Ballymun west of Ballymun Road (Sillogue, Balcurris, Balbutcher, Poppintree, Sandyhill and Wadelai), Dubber Cross, Finglas (including Ballygall and Cappagh), most of Glasnevin (Cremore, Addison, Violet Hill, Finglas Road, Old Finglas Road and Glasnevin Cemetery), Kilshane Cross, The Ward and Coolquay.
- Dublin 12 includes Bluebell, Crumlin, Drimnagh, Greenhills, Perrystown and Walkinstown.
- Dublin 13 Baldoyle, Bayside, Donaghmede, Clongriffin, Sutton, Howth and Ayrfield.
- Dublin 14 includes Churchtown, Clonskeagh, most of Dundrum, Goatstown, parts of Rathfarnham and Windy Arbour.
- Dublin 15 includes, Ashtown, Blanchardstown, Castleknock, Coolmine, Clonsilla, Corduff, Mulhuddart, Tyrrelstown and the Dublin part of Clonee, as well as Ongar.
- Dublin 16 includes Ballinteer, Ballyboden, parts of Dundrum, Kilmashogue, Knocklyon, parts of Rathfarnham and Rockbrook.
- Dublin 17 includes Balgriffin, most of Coolock, and Belcamp, Darndale and Priorswood.
- Dublin 18 includes Cabinteely, Carrickmines, Foxrock, Kilternan, Sandyford, Shankill, Ticknock, Ballyedmonduff, Stepaside, and Leopardstown.
- Dublin 20 includes Chapelizod, and Palmerstown. This is one of only two postal districts to span the Liffey.
- Dublin 22 includes Clondalkin, Rowlagh, Quarryvale and Liffey Valley, and Neilstown.
- Dublin 24 includes Firhouse, Jobstown, Old Bawn and Tallaght.
On 8 October 2013, Minister for Communications, Energy and Natural Resources, Pat Rabbitte announced a postcode system for the entire country. This came into effect during 2015 and gave an individual post code to every address in Ireland. The pre-existing Dublin district numbers are a component of the full postcode for relevant addresses, forming part of the routing code, the first three characters of the code. For example, a code for an address in Dublin 1 would start with D01, followed by four characters, hence Dublin D01 B2CD.
Public awareness of Dublin postal districts allows occasional use in marketing. Dublin n is usually abbreviated to Dn, with examples including the "D7 Restaurant" or "D4 Hotels".
Rhodes D7 restaurant
- "New postal code system by 2011". Irish Times. 21 September 2009.
- "Ireland's new postcode system launches today – here's what you need to know". thejournal.ie. The Journal. 13 July 2015.
- "New 'Eircodes' being sent to Fingal addresses this month". Fingal Independent. Independent News & Media. 18 July 2015.
- "Dubliners go postal over the right address". Irish Independent. Independent News & Media. 19 July 2015.
The new regime does not yet seem to spell the end for the postal district numbering system [..] drawn up under British rule in 1917
- "Dublin's vanishing postal districts". Irish Times. 16 March 2015.
The postal districts in Dublin date back to 1917, when they were also introduced in cross- channel cities. Postal districts had started in London in 1857 [..] Dublin didn’t start using postal district numbers until 1961, as reflected in the old green street nameplates
- "Ireland's new postcodes: Everything you need to know about Eircode". Irish Mirror. 13 July 2015.
- "It's in the postcode". Irish Independent. Independent News & Media. 26 September 2009.
- "Postcode war 'in next year'". Irish Independent. 21 September 2008.
- "Postcode snobbery screams 'location, location, location'". Irish Times. 11 October 2003.
- Moore, Robert (2011). ""If I Actually Talked Like That, I'd Pull a Gun on Myself": Accent, Avoidance, and Moral Panic in Irish English". Anthropological Quarterly. 84 (1): 41–64. doi:10.1353/anq.2011.0014. JSTOR 41237479.
- Note: Most of the civil parish of Artaine – the townlands of Artaine South, Artaine West and Puckstown – lies within Dublin 9.
- "Ryan finalises plans for new postcode system". Sunday Tribune. 3 January 2010. Archived from the original on 9 July 2010.
- Coyle, Coloin (10 September 2006). "Upmarket Dublin survives postcode shake-up". The Sunday Times. Ireland News. UK. Archived from the original on 11 May 2009. Retrieved 28 September 2008.
- Michael, Jason (21 September 2009). "New postal code system by 2011". The Irish Times. Retrieved 28 September 2008.
- Rabbitte, Minister Pat (8 October 2013). "Rabbitte Gets Green Light From Cabinet For "Next Generation Postcode" System By 2015". Department of Communications, Energy and Natural Resources. Archived from the original on 22 November 2013. Retrieved 21 December 2013.
- "Frequently Asked Questions". eircode.ie. Eircode. Retrieved 12 April 2019.
The existing established Dublin Postal Districts 1 to 24 and 6W are being retained in the Routing Key as D01 to D24