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Surnames by county · Connacht

Most common surnames in County Sligo

Gallagher was the commonest surname in Co. Sligo in 1911: 1,218 people, about one resident in 65. It was followed by Brennan, Walsh, Kelly and McDonagh.

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 Gallagher 1,218 154 2 1
2 Brennan 1,201 152 1 2
3 Walsh 959 121 3 4
4 Kelly 888 112 4 3
5 McDonagh 811 103 5 5
6 McGowan 768 97 7 7
7 Harte 745 94 6 8
8 O'Connor 707 89 8 9
9 Feeney 681 86 16 13
10 O'Hara 674 85 11 12
11 Gilmartin 664 84 13 14
12 Henry 664 84 10 16
13 Healy 649 82 12 10
14 Scanlon 642 81 9 6
15 McLaughlin 592 75 14 11
16 Flynn 536 68 15 17
17 Conlon 522 66 17 15
18 Kennedy 520 66 18 19
19 Connolly 499 63 19 18
20 Higgins 443 56 24 20
21 Waters 429 54 29 35
22 Rooney 422 53 34 27
23 Hunt 416 53 20 23
24 Cawley 411 52 22 30
25 Leonard 411 52 25 24

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 Sligo

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

  1. Brennan 4.55× 1,201 people · 152 per 10,000
  2. Gallagher 3.54× 1,218 people · 154 per 10,000
  3. Healy 3.3× 649 people · 82 per 10,000
  4. Higgins 3.19× 443 people · 56 per 10,000
  5. McDermott 2.65× 348 people · 44 per 10,000
  6. McLaughlin 2.26× 592 people · 75 per 10,000
  7. Foley 2.19× 348 people · 44 per 10,000
  8. Flynn 2.11× 536 people · 68 per 10,000
  9. Connolly 1.95× 499 people · 63 per 10,000
  10. Casey 1.83× 304 people · 38 per 10,000

Questions about surnames in Sligo

What is the most common surname in County Sligo?

In the 1911 census the most common surname in Co. Sligo was Gallagher, with 1,218 people, or about one resident in 65. The next most common were Brennan, Walsh, Kelly and McDonagh. Gallagher was still the commonest name in 1926.

Which surnames are most typical of County Sligo?

Compared with Ireland as a whole, the names most over-represented in Co. Sligo in 1911 (among the 100 commonest Irish surnames) were Brennan (4.55× the national rate), Gallagher (3.54× the national rate), Healy (3.3× the national rate).

Ancestors from County Sligo?

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

Sligo records on irishcensus.com