Counties of Ireland

Buy data    Donate


Clive Carpenter informs me that there will be a change in Ireland's local government structure effective 2014-06. There will be minor changes to the counties. The secondary level will consist mainly of municipal districts.

ISO 3166-2 Newsletter II-3 is dated 2011-12-15. It changes the code for Cork (formerly IE-C), to avoid duplicating the code for Connaught province.

The latest version of the FIPS standard is called "Geopolitical Entities and Codes", published in 2010-04. It shows Ireland divided into administrative counties rather than traditional ones. I've added a table under Further subdivisions to show the correspondence.

ISO 3166-2 Newsletter number II-1, dated 2010-02-03, has changes to the listing for Ireland, but nothing that affects data reported on this site. The only change is adding the prefix IE- explicitly to each province code.

Change Notice 8 to FIPS PUB 10-4 is dated 2002-06-28. The only change under Ireland is that the Gaelic names of the counties were added as alternate names.

Country overview: 

Short nameIRELAND
ISO codeIE
LanguagesEnglish (en), Gaelic (ga)
Time zone0 ~


At the beginning of the 20th century, the whole island of Ireland was part of the United Kingdom. Irish patriots repeatedly argued and fought for independence. Finally, on 1921-12-06, the Anglo-Irish Treaty was signed. By its terms, Ireland became an independent country with dominion status, although Northern Ireland was to be allowed to make a separate decision. The name of the new country was the Irish Free State (Gaelic: Saorstát Éireann). On 1922-12-12, six counties in the north voted to revert to the United Kingdom. On 1949-04-18, the Irish Free State broke off its remaining links with Britain under a new constitution, becoming the Irish Republic (Poblacht na hÉireann).

Other names of country: 

  1. Danish: Irland
  2. Dutch: Ierse Republiek, Ierland, Republiek Ierland (formal)
  3. English: Republic of Ireland (formal), Irish Free State (obsolete)
  4. Finnish: Irlanti
  5. French: Irlande f
  6. Gaelic: Éire (formal)
  7. German: Irland, Eire n, Irische Republik f, Republik f Irland n (formal)
  8. Icelandic: Írland
  9. Italian: Irlanda f
  10. Norwegian: Irland
  11. Portuguese: Irlanda f
  12. Russian: Ирландия
  13. Spanish: Irlanda, República f de Irlanda f (formal)
  14. Swedish: Irland
  15. Turkish: İrlanda

Origin of name: 

Éire + land. Éire may be from iar: west + fonn: country; or from i: isle + iarunn: iron.

Primary subdivisions: 

Ireland is divided into 26 (traditional) counties.

CavanIE.CNCNU73,1831,891730An CabhánCavan
ClareIE.CECEM117,1963,1881,231An ClárEnnis
DonegalIE.DLDLU161,1374,8311,865Dún na nGallLifford
DublinIE.DNDL1,273,069922356Baile Átha CliathDublin
KildareIE.KEKEL210,3121,694654Cill DaraNaas
KilkennyIE.KKKKL95,4192,062796Cill ChainnighKilkenny
LeitrimIE.LMLMC31,7981,525589LiatroimCarrick on Shannon
LongfordIE.LDLDL39,0001,044403An LongfortLongford
MayoIE.MOMOC130,6385,3982,084Maigh EoCastlebar
MeathIE.MHMHL184,1352,336902An MhíTrim
OffalyIE.OYOYL76,6871,998771Uíbh FhailíTullamore
RoscommonIE.RNRNC64,0652,463951Ros ComáinRoscommon
TipperaryIE.TYTAM158,7544,2551,643Tiobraid ÁrannClonmel (S), Nenagh (N)
WaterfordIE.WDWDM113,7951,838710Port LáirgeWaterford
WestmeathIE.WHWHL86,1641,763681An IarmhíMullingar
WexfordIE.WXWXL145,3202,351908Loch GarmanWexford
WicklowIE.WWWWL136,6402,025782Cill MhantáinWicklow
26 counties4,588,25268,89726,600
  • HASC: Hierarchical administrative subdivision codes.
  • ISO: Codes from ISO 3166-2. Based on Ireland's Statutory County Codes, used on license
    plates, etc., with minor differences (e.g. TN and TS for Tipperary North and South).
  • Pr: Traditional provinces (see list below).
  • Population: 2011-04-10 census (source [1]).
  • Gaelic: Name of county in Gaelic
  • Capital: See note


Note: Sources disagree about some capitals (county seats). The capital of Laois is Portlaoise. The same city is known as Maryborough, and has been known by both names throughout the 20th century. The name Maryborough was more common in English-language sources up to ~1955; after that, Portlaoise, or one of its variant spellings (Port Laoighis, Portlaoighise, etc.), was preferred. The sources seem to be divided on the capital of Meath: some say it's Trim (Baile Átha Troim), while others say Navan (An Uaimh). Nenagh is the capital of North Tipperary, and Clonmel, South Tipperary. Finally, most sources say that the capital of Waterford is Waterford, but a few of them say that it's Dungarvan. Here, Dungarvan is the capital of Waterford administrative county, while Waterford itself is an administratively separate city.

Further subdivisions:

Ireland has administrative counties, electoral counties, and what I will call traditional counties. Most administrative counties have the same name and extent as traditional counties. The exceptions are four traditional counties that each contain an administrative county and a city, all of the same name (Cork, Galway, Limerick, and Waterford); one traditional county that is divided into two administrative counties (Tipperary); and one traditional county that is divided into three administrative counties and a city (Dublin). The electoral counties are election districts, and correspond to one or two traditional counties or a portion of a traditional county. The cities were known as county boroughs until 2001.

In common with the ISO standard, I list the traditional counties. The FIPS standard was superseded in 2010 by a document called "Geopolitical Entities and Codes", which lists the administrative counties. The following table shows the new standard and how to match it to the old one.

Dún Laoghaire-RathdownuEI34DublinEI07
North TipperaryuEI38TipperaryEI26
South DublinuEI39DublinEI07
South TipperaryuEI40TipperaryEI26
  • Typ: u = county, i = city.
  • New: "Geopolitical Entities and Codes".
  • Old: Codes from FIPS PUB 10-4.


The provinces date back to about the beginning of the Christian era, when there were five of them (with Meath). They now have no administrative function. The separation of Northern Ireland divided Ulster into two parts: the larger (six counties at the time of the split) is all of Northern Ireland, and the smaller (three counties) is now two disjoint parts of the Irish Republic.

MMunsterAn Mhumhain1,246,08824,128
  • ISO: Province codes from ISO 3166-2.
  • Gaelic: Name of province in Gaelic
  • Population: 2011-04-10 census.


Eight regional authorities were established in 1994. Their functions are largely confined to studying and recommending. They are equivalent to level-3 NUTS areas (Nomenclature of Territorial Units for Statistics, a Eurostat classification). The first four characters of their NUTS codes determine which level-2 NUTS area they belong to: IE01 for Border, Midlands and Western; IE02 for Southern and Eastern.

BorderIE011Cavan, Donegal, Leitrim, Louth, Monaghan, Sligo
Mid-EastIE022Kildare, Meath, Wicklow
MidlandIE012Laois, Longford, Offaly, Westmeath
Mid-WestIE023Clare, Limerick, Tipperary North Riding
South-EastIE024Carlow, Kilkenny, Tipperary South Riding, Waterford, Wexford
South-WestIE025Cork, Kerry
WestIE013Galway, Mayo, Roscommon

Territorial extent: 

All of the counties lie primarily on the main island, Ireland. Other islands occupied are listed for each county, roughly in order of decreasing size.

  1. Clare: Mutton, and islands in the Shannon Estuary, especially at the mouth of River Fergus
  2. Cork: Bear (Bere), Dursey, Great (in Cork Harbor), Clear, Sherkin, Whiddy, Long
  3. Donegal: Aran, Tory, Cruit, Inishbofin, Inishtrahull, Gola
  4. Dublin: Lambay, Dalkey, Irelands Eye, Shenicks
  5. Galway: the Aran Islands, of which the largest are Inishmore, Inishmaan, and Inisheer; Gorumna, Inishbofin, Lettermore, Inishshark, Lettermullan, Mweenish, Tawin, Omey, High, Croaghnakeela
  6. Kerry: Valentia (Valencia), the Blasket Islands (largest is Great Blasket), Carrig, Scariff, Beginish
  7. Mayo: Achill, Clare, Inishturk, Inishkea North and South, Caher
  8. Sligo: Inishmurray
  9. Wexford: Saltee Islands, Tuskar Rock

Origins of names: 

  1. Carlow: Irish ceatharlach: quadruple lake
  2. Cavan: Irish an cabhán: hollow
  3. Clare: Irish an clár: plain
  4. Cork: from Irish corcach: swamp
  5. Donegal: Irish Dun na nGall: fort of foreigners (probably Danes)
  6. Dublin: Irish dubh: black, linn: pool, referring to the Liffey estuary
  7. Galway: Irish gailimh: stony river
  8. Kerry: Irish ciarraí: people of Ciar
  9. Kildare: Irish cill: convent, dara: oak
  10. Kilkenny: Irish for church of Cainneach
  11. Laois: from ethnic name, tribe of Laeight
  12. Leitrim: Irish liatroim: gray ridge
  13. Limerick: Irish luimneach: barren land
  14. Longford: fortified place
  15. Louth: after River Lud
  16. Mayo: Irish maigh eo: plain of the yews
  17. Meath: Irish an mhí: the middle
  18. Monaghan: Irish muineachán: place of the shrubs
  19. Offaly: Irish uíbh Fhailí: Failghe's people
  20. Roscommon: Irish ros Comáin: grove of Comán
  21. Sligo: after River Shelly
  22. Tipperary: Irish tipper: spring or well, and Ara, the name of a river
  23. Ulster: Irish uladh: cairn, tomb, and a suffix -ster for land
  24. Waterford: inlet of water
  25. Westmeath: Irish an iarmhí: middle west

Change history: 

  1. 1898: Under the Local Government (Ireland) Act, 1898, Tipperary county split into Tipperary North Riding and Tipperary South Riding administrative counties. Cork, Dublin, Limerick, and Waterford county boroughs split from the administrative counties of the same names.
  2. 1920: Names of Kings and Queens counties changed to Offaly and Laois, respectively.
  3. 1985: Galway county borough split from Galway administrative county.
  4. 1993-11-01: Under the Maastricht Treaty, the European Union replaced the European Communities, of which Ireland was a member.
  5. 1994-01-01: Under the (Regional Authorities) (Establishment) Order, eight regions were established, as listed under "Further Subdivisions". At the same time, under the Local Government (Dublin) Act, 1993, Dublin administrative county split into Dun Laoghaire-Rathdown (capital Dún Laoghaire), Fingal (Swords), and South Dublin (Tallaght) administrative counties.
  6. 2001: Under the Local Government Act, 2001 (S.I. 591 of 2001), status of county boroughs changed to cities; status of municipal boroughs changed to boroughs; names of North Tipperary Riding and South Tipperary Riding changed to North Tipperary and South Tipperary, respectively.

Other names of subdivisions: 

  1. Donegal: Tyrconnel (obsolete)
  2. Dublin: Dublín (Spanish); Dublino (Italian); Dyflinni (Icelandic); Дублин (Russian)
  3. Laois: Laoighis, Leix (variant); Queens (obsolete)
  4. Offaly: Kings (obsolete)

Population history:



  1. [1] Population Classified by Area . Central Statistics Office, Dublin, 2012-04 (retrieved 2012-08-28).
  2. [2] "Population and Vital Statistics." Central Statistics Office Ireland (dead link, retrieved 2003-12-06 from
  3. [3] Europa World Year Book 2001. Europa Publications, London, 2001.
  4. [4] Census 86, Vol. 1. Stationery Office, Dublin.
  5. [5] Statistisches Jahrbuch 1992 für die Bundesrepublik Deutschland. Statistisches Bundesamt, Wiesbaden, 1992.
  6. [6] Fifth United Nations Conference on the Standardization of Geographical Names. Vol. II. New York: United Nations, 1991.
Back to main statoids page Last updated: 2013-09-25
Copyright © 1999, 2001-2005, 2008, 2010-2013 by Gwillim Law.