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This is a list of counties of Ireland ordered by population. Counties in the Republic of Ireland are shown in normal type, while those in Northern Ireland are listed in italic type. See also the list of Irish counties by area. The counties of Northern Ireland no longer have a function in demarcating areas of local government. For a more detailed analysis of current and historical Irish populations in the Republic of Ireland, see Irish population analysis. The total population of Ireland in the 2001 census was 4,588,252

Data source/age (as-of November 2012):

Rank County Population Density (/ km²) Province Change since
previous census
1 Dublin 1,273,069 1380.8 Leinster Increase 7.02%
2 Antrim 618,108 202.9 Ulster Increase 1.80%
3 Down 531,665 215.6 Ulster Increase 8.72%
4 Cork 519,032 69.0 Munster Increase 7.84%
- Fingal 273,991 600.6 Leinster Increase 14.17%
- South Dublin 265,205 1,190.6 Leinster Increase 7.40%
5 Galway 250,541 40.7 Connacht Increase 8.15%
6 Londonderry 247,132 119.1 Ulster Increase 4.78%
7 Kildare 210,312 124.1 Leinster Increase 12.87%
- Dún Laoghaire–Rathdown 206,261 1,620.1 Leinster Increase 6.30%
8 Limerick 191,809 69.4 Munster Increase 4.21%
9 Meath 184,135 78.6 Leinster Increase 13.08%
10 Tyrone 177,986 54.5 Ulster Increase 8.37%
11 Armagh 174,792 131.8 Ulster Increase 7.26%
12 Donegal 161,137 32.9 Ulster Increase 9.42%
13 Tipperary 158,754 36.8 Munster Increase 6.37%
14 Kerry 145,502 30.1 Munster Increase 4.05%
15 Wexford 145,320 61.2 Leinster Increase 10.30%
16 Wicklow 136,640 67.4 Leinster Increase 8.28%
17 Mayo 130,638 23.3 Connacht Increase 5.49%
18 Louth 122,897 148.7 Leinster Increase 10.45%
19 Clare 117,196 33.8 Munster Increase 5.63%
20 Waterford 113,795 61.2 Munster Increase 5.40%
21 Kilkenny 95,419 46.0 Leinster Increase 8.98%
- South Tipperary 88,432 39.2 Munster Increase 6.26%
22 Westmeath 86,164 46.7 Leinster Increase 8.59%
23 Laois 80,559 46.8 Leinster Increase 20.13%
24 Offaly 76,687 38.3 Leinster Increase 8.21%
25 Cavan 73,183 37.7 Ulster Increase 14.34%
- North Tipperary 70,322 34.4 Munster Increase 6.61%
26 Sligo 65,393 35.5 Connacht Increase 7.39%
27 Roscommon 64,065 25.0 Connacht Increase 9.01%
28 Fermanagh 61,170 36.1 Ulster Increase 6.33%
29 Monaghan 60,483 46.7 Ulster Increase 8.01%
30 Carlow 54,612 60.8 Leinster Increase 8.47%
31 Longford 39,000 35.7 Leinster Increase 13.40%
32 Leitrim 31,796 19.9 Connacht Increase 9.84%
Average 199,974
Total Ireland 6,469,688 76.6

     indicates that this county is a non-traditional administrative county

NotesEdit

  1. The populations of Dublin, Cork, Galway, Limerick and Waterford cities have been added to their respective traditional counties. For a list of these cities by population see, List of towns in the Republic of Ireland by population.
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