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Surnames by county · Leinster

Most common surnames in County Offaly

Kelly was the commonest surname in Co. Offaly in 1911: 1,091 people, about one resident in 52. It was followed by Dunne, Egan, Carroll and Daly.

Counts are people living in the county on census night, with spelling variants combined (Sullivan and O'Sullivan count as one name).

Donegal Waterford Dublin Kilkenny Carlow Limerick Louth Tipperary Roscommon Meath Wicklow Cavan Cork Clare Galway Mayo Sligo Leitrim Offaly Laois Kildare Kerry Monaghan Wexford Longford Westmeath Tyrone Antrim Armagh Fermanagh Londonderry Down

The 25 commonest names, 1911

#SurnamePeoplePer 10,00019011926
1 Kelly 1,091 192 1 2
2 Dunne 1,085 191 2 1
3 Egan 864 152 3 3
4 Carroll 672 118 4 6
5 Daly 660 116 5 4
6 Molloy 647 114 6 5
7 O'Connor 545 96 7 7
8 Ryan 505 89 8 8
9 Byrne 496 87 9 12
10 Walsh 471 83 11 9
11 Kenny 451 79 10 10
12 O'Brien 448 79 12 11
13 Mooney 394 69 16 18
14 Guinan 382 67 15 14
15 Murphy 381 67 18 13
16 Flanagan 379 67 13 16
17 Murray 364 64 21 15
18 Kennedy 347 61 17 19
19 Flynn 339 60 19 17
20 Horan 330 58 14 20
21 Maher 318 56 20 29
22 Quinn 302 53 22 27
23 Bracken 297 52 25 24
24 Smith 287 50 24 23
25 Dooley 286 50 29 26

The 1901 and 1926 columns give the name's rank in the county in that year; a dash means it was outside the top 40. Linked names have a full page with meaning, Irish forms and history.

Names most typical of Offaly

Among the 100 commonest Irish surnames, these were the most over-represented in Co. Offaly in 1911, compared with their share of Ireland's population as a whole.

  1. Dunne 6.05× 1,085 people · 191 per 10,000
  2. Flanagan 3.93× 379 people · 67 per 10,000
  3. Kenny 3.74× 451 people · 79 per 10,000
  4. Carroll 3.59× 672 people · 118 per 10,000
  5. Daly 3.48× 660 people · 116 per 10,000
  6. Maher 3.18× 318 people · 56 per 10,000
  7. Hogan 2.53× 241 people · 42 per 10,000
  8. Flynn 1.86× 339 people · 60 per 10,000
  9. Kelly 1.81× 1,091 people · 192 per 10,000
  10. Whelan 1.66× 179 people · 31 per 10,000

Questions about surnames in Offaly

What is the most common surname in County Offaly?

In the 1911 census the most common surname in Co. Offaly was Kelly, with 1,091 people, or about one resident in 52. The next most common were Dunne, Egan, Carroll and Daly. By 1926 the commonest name was Dunne.

Which surnames are most typical of County Offaly?

Compared with Ireland as a whole, the names most over-represented in Co. Offaly in 1911 (among the 100 commonest Irish surnames) were Dunne (6.05× the national rate), Flanagan (3.93× the national rate), Kenny (3.74× the national rate).

Ancestors from County Offaly?

Browse every townland and household in Co. Offaly in the 1901, 1911 and 1926 censuses.

Offaly records on irishcensus.com