Denne oversigt over de 100 største byer i Republikken Irland er baseret på Folketællingen i Irland 2016 . Byer med city-status er anført med betegnelsen (city) efter bynavn.
Befolkningstallet er inklusive forstæder. Dette forklarer, hvorfor nogle af byerne strækker sig over to county (grevskaber).
Irlands største by Dublin
Nr. 2 Cork
Nr. 3 Limerick
Nr. 4 Galway
Nr. 5 Waterford
Nr. 6 Drogheda
Nr. 7 Swords
Nr. 8, Dundalk
Nr. 9, Bray
Nr. 10, Navan
Nr. 11, Kilkenny
Nr. 12, Ennis
Nr. 13, Carlow
Flere oplysninger Rangering 2016, Ændring siden 2011 ...
Rangering 2016
Ændring siden 2011
Byområde
County
Befolkning i 2016
Ændring siden 2011
1 0 Dublin County Dublin 1,173,179[1] 5.6%
2 0 Cork County Cork 208,669[2] 5.1%
3 0 Limerick County Limerick & County Clare 94,192[3] 3.0%
4 0 Galway County Galway 79,934[4] 4.1%
5 0 Waterford County Waterford & County Kilkenny 53,504[5] 3.9%
6 0 Drogheda County Louth & County Meath 40,956[6] 6.2%
7 1 Swords County Fingal 39,248[7] 6.3%
8 1 Dundalk County Louth 39,004[8] 3.1%
9 0 Bray County Wicklow & County Dublin 32,600[9] 2.3%
10 0 Navan County Meath 30,173[10] 5.7%
11 1 Kilkenny County Kilkenny 26,512[11] 8.6%
12 1 Ennis County Clare 25,276[12] -0.3%
13 1 Carlow County Carlow & County Laois 24,272[13] 5.4%
14 1 Tralee County Kerry 23,691[14] -0.0%
15 0 Newbridge County Kildare 22,742[15] 5.5%
16 2 Port Laoise County Laois 22,050[16] 9.5%
17 4 Balbriggan County Fingal 21,722[17] 8.8%
18 2 Naas County Kildare 21,393[18] 3.3%
19 2 Athlone County Westmeath & County Roscommon 21,349[19] 5.9%
20 1 Mullingar County Westmeath 20,928[20] 4.1%
21 2 Celbridge County Kildare 20,288 3.8%
22 2 Wexford County Wexford 20,188 0.6%
23 1 Letterkenny County Donegal 19,274 -1.6%
24 0 Sligo County Sligo 19,199 -1.3%
25 1 Greystones County Wicklow 18,140 3.8%
26 1 Clonmel County Tipperary & County Waterford 17,140 -4.3%
27 0 Malahide County Fingal 16,550 4.4%
28 1 Carrigaline County Cork 15,770 6.7%
29 1 Leixlip County Kildare 15,504 0.3%
30 0 Tullamore County Offaly 14,607 1.7%
31 2 Maynooth County Kildare 14,585 16.6%
32 1 Killarney County Kerry 14,504 2.0%
33 1 Arklow County Wicklow 13,163 1.2%
34 0 Cobh County Cork 12,800 3.7%
35 3 Ashbourne County Meath 12,679 11.7%
36 0 Midleton County Cork 12,496 4.1%
37 0 Mallow County Cork 12,459 7.4%
38 3 Castlebar County Mayo 12,068 -2.0%
39 1 Laytown-Bettystown-Mornington-Donacarney County Meath 11,872 9.0%
40 1 Enniscorthy County Wexford 11,381 5.0%
41 3 Cavan County Cavan 10,914 6.4%
42 0 Wicklow County Wicklow 10,584 2.2%
43 0 Tramore County Waterford 10,381 0.5%
44 5 Ballina County Mayo 10,171 -8.3%
45 2 Skerries County Fingal 10,043 3.8%
46 2 Longford County Longford 10,008 4.2%
47 4 Rush County Fingal 9,943 7.7%
48 4 Gorey County Wexford 9,822[21] 7.8%
49 3 Shannon County Clare 9,729 0.6%
50 5 Athy County Kildare 9,677 -2.5%
51 2 Ratoath County Meath 9,533 5.4%
52 2 Portmarnock County Fingal 9,466 1.9%
53 4 Dungarvan County Waterford 9,227 -2.1%
54 1 Trim County Meath 9,194 11.2%
55 1 Nenagh County Tipperary 8,968 6.3%
56 0 Tuam County Galway 8,767 6.4%
57 1 Kildare County Kildare 8,634 6.0%
58 3 Portarlington County Laois & County Offaly 8,368 7.4%
59 2 New Ross County Wexford 8,040 -1.4%
60 0 Youghal County Cork 7,963 2.2%
61 2 Thurles County Tipperary 7,940 0.1%
62 1 Lusk County Fingal 7,786 10.9%
63 1 Monaghan County Monaghan 7,678 3.0%
64 3 Donabate County Fingal 7,443 9.8%
65 1 Edenderry County Offaly 7,359 5.5%
66 2 Clane County Kildare 7,280 8.6%
67 2 Dunboyne County Meath 7,272 4.5%
68 2 Bandon County Cork 6,957 4.8%
69 3 Buncrana County Donegal 6,785 -0.8%
70 1 Ballinasloe County Galway & County Roscommon 6,662 0.0%
71 6 Kinsealy -Drinan County Fingal 6,643 14.3%
72 0 Newcastle West County Limerick 6,619 4.6%
73 2 Fermoy County Cork 6,585 1.5%
74 1 Westport County Mayo 6,198 2.2%
75 0 Kells County Meath 6,135 4.2%
76 4 Kilcock County Kildare 6,093 10.1%
77 2 Roscommon County Roscommon 5,876 3.2%
78 5 Sallins County Kildare 5,849 10.7%
79 1 Passage West County Cork 5,843 0.9%
80 6 Carrick-on-Suir County Tipperary & County Waterford 5,771 -2.7%
81 5 Birr County Offaly & County Tipperary 5,741 -1.3%
82 3 Loughrea County Galway 5,556 9.8%
83 3 Blessington County Wicklow 5,520 10.2%
84 2 Roscrea County Tipperary 5,446 0.8%
85 4 Kinsale County Cork 5,281 7.9%
86 9 Carrigtwohill County Cork 5,080 11.6%
87 1 Carrickmacross County Monaghan 5,032 2.2%
88 4 Oranmore County Galway 4,990 4.0%
89 6 Tipperary County Tipperary 4,979 -6.2%
90 3 Ardee County Louth 4,928 0.0%
91 1 Ballybofey -Stranorlar County Donegal 4,852 0.0%
92 1 Listowel County Kerry 4,820 -0.2%
93 0 Mountmellick County Laois 4,777 0.9%
94 6 Tullow County Carlow 4,673 17.6%
95 1 Clonakilty County Cork 4,592 -2.7%
96 5 Athenry County Galway 4,445 12.5%
97 1 Cashel County Tipperary 4,422 9.2%
98 new Rathcoole South Dublin 4,351 27.2%
99 new Monasterevin County Kildare 4,246 14.4%
100 4 Kilcoole County Wicklow 4,239 4.7%
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