| Rank
|
County
|
Population
|
Density
|
Traditional province
|
Jurisdiction
|
Change since previous census (%)
|
Change per year (%)
|
| (/km2)
|
(/mi2)
|
| 1
|
Dublin
|
1,458,154
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 7.7%
|
Template:IncreaseNeutral 1.28%
|
| 2
|
Antrim
|
651,321
|
Template:Convert
|
Ulster
|
Northern Ireland
|
Template:IncreaseNeutral 5.1%
|
Template:IncreaseNeutral 0.51%
|
| 3
|
Cork
|
584,156
|
Template:Convert
|
Munster
|
Republic of Ireland
|
Template:IncreaseNeutral 7.1%
|
Template:IncreaseNeutral 1.18%
|
| 4
|
Down
|
553,261
|
Template:Convert
|
Ulster
|
Northern Ireland
|
Template:IncreaseNeutral 3.9%
|
Template:IncreaseNeutral 0.39%
|
| –
|
Fingal
|
330,506
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 11.2%
|
Template:IncreaseNeutral 1.86%
|
| –
|
South Dublin
|
301,705
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 7.5%
|
Template:IncreaseNeutral 1.25%
|
| 5
|
Galway
|
277,737
|
Template:Convert
|
Connacht
|
Republic of Ireland
|
Template:IncreaseNeutral 7.1%
|
Template:IncreaseNeutral 1.18%
|
| 6
|
Londonderry
|
252,231
|
Template:Convert
|
Ulster
|
Northern Ireland
|
Template:IncreaseNeutral 2.0%
|
Template:IncreaseNeutral 0.20%
|
| 7
|
Kildare
|
247,774
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 11.0%
|
Template:IncreaseNeutral 1.83%
|
| –
|
Dún Laoghaire–Rathdown
|
233,860
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 7.1%
|
Template:IncreaseNeutral 1.18%
|
| 8
|
Meath
|
220,826
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 12.9%
|
Template:IncreaseNeutral 2.15%
|
| 9
|
Limerick
|
209,536
|
Template:Convert
|
Munster
|
Republic of Ireland
|
Template:IncreaseNeutral 5.4%
|
Template:IncreaseNeutral 0.9%
|
| 10
|
Armagh
|
194,394
|
Template:Convert
|
Ulster
|
Northern Ireland
|
Template:IncreaseNeutral 10.1%
|
Template:IncreaseNeutral 1.01%
|
| 11
|
Tyrone
|
188,383
|
Template:Convert
|
Ulster
|
Northern Ireland
|
Template:IncreaseNeutral 5.5%
|
Template:IncreaseNeutral 0.55%
|
| 12
|
Tipperary
|
167,895
|
Template:Convert
|
Munster
|
Republic of Ireland
|
Template:IncreaseNeutral 5.1%
|
Template:IncreaseNeutral 0.85%
|
| 13
|
Donegal
|
167,084
|
Template:Convert
|
Ulster
|
Republic of Ireland
|
Template:IncreaseNeutral 4.5%
|
Template:IncreaseNeutral 0.75%
|
| 14
|
Wexford
|
163,919
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 9.2%
|
Template:IncreaseNeutral 1.53%
|
| 15
|
Kerry
|
156,458
|
Template:Convert
|
Munster
|
Republic of Ireland
|
Template:IncreaseNeutral 5.1%
|
Template:IncreaseNeutral 0.85%
|
| 16
|
Wicklow
|
155,851
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 9.2%
|
Template:IncreaseNeutral 1.53%
|
| 17
|
Louth
|
139,703
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 7.9%
|
Template:IncreaseNeutral 1.31%
|
| 18
|
Mayo
|
137,970
|
Template:Convert
|
Connacht
|
Republic of Ireland
|
Template:IncreaseNeutral 5.2%
|
Template:IncreaseNeutral 0.87%
|
| 19
|
Clare
|
127,938
|
Template:Convert
|
Munster
|
Republic of Ireland
|
Template:IncreaseNeutral 7.2%
|
Template:IncreaseNeutral 1.2%
|
| 20
|
Waterford
|
127,363
|
Template:Convert
|
Munster
|
Republic of Ireland
|
Template:IncreaseNeutral 9.4%
|
Template:IncreaseNeutral 1.57%
|
| 21
|
Kilkenny
|
104,160
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 4.5%
|
Template:IncreaseNeutral 0.75%
|
| 22
|
Westmeath
|
96,221
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 8.0%
|
Template:IncreaseNeutral 1.33%
|
| 23
|
Laois
|
91,877
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 8.2%
|
Template:IncreaseNeutral 1.37%
|
| 24
|
Offaly
|
83,150
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 6.0%
|
Template:IncreaseNeutral 1.0%
|
| 25
|
Cavan
|
81,704
|
Template:Convert
|
Ulster
|
Republic of Ireland
|
Template:IncreaseNeutral 6.6%
|
Template:IncreaseNeutral 1.1%
|
| 26
|
Roscommon
|
70,259
|
Template:Convert
|
Connacht
|
Republic of Ireland
|
Template:IncreaseNeutral 8.4%
|
Template:IncreaseNeutral 1.4%
|
| 27
|
Sligo
|
70,198
|
Template:Convert
|
Connacht
|
Republic of Ireland
|
Template:IncreaseNeutral 6.5%
|
Template:IncreaseNeutral 1.08%
|
| 28
|
Monaghan
|
65,288
|
Template:Convert
|
Ulster
|
Republic of Ireland
|
Template:IncreaseNeutral 5.6%
|
Template:IncreaseNeutral 0.93%
|
| 29
|
Fermanagh
|
63,585
|
Template:Convert
|
Ulster
|
Northern Ireland
|
Template:IncreaseNeutral 3.8%
|
Template:IncreaseNeutral 0.38%
|
| 30
|
Carlow
|
61,968
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 8.8%
|
Template:IncreaseNeutral 1.47%
|
| 31
|
Longford
|
46,751
|
Template:Convert
|
Leinster
|
Republic of Ireland
|
Template:IncreaseNeutral 14.1%
|
Template:IncreaseNeutral 2.35%
|
| 32
|
Leitrim
|
35,199
|
Template:Convert
|
Connacht
|
Republic of Ireland
|
Template:IncreaseNeutral 9.5%
|
Template:IncreaseNeutral 1.58%
|
| Total
|
Island of Ireland
|
7,052,314
|
83.5
|
Template:Convert
|
|
|
|
|