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Surnames by county · Ulster

Most common surnames in County Londonderry

Doherty was the commonest surname in Co. Londonderry in 1911: 2,815 people, about one resident in 50. It was followed by McLaughlin, O'Kane, Kelly and Bradley.

Counts are people living in the county on census night, with spelling variants combined (Sullivan and O'Sullivan count as one name). The 1926 census covered the Irish Free State only, so it has no figures for this county.

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 10,0001901
1 Doherty 2,815 201 1
2 McLaughlin 2,097 150 2
3 O'Kane 1,954 140 3
4 Kelly 1,390 100 4
5 Bradley 1,372 98 7
6 Smith 1,334 95 6
7 McCloskey 1,304 93 5
8 Campbell 1,218 87 8
9 O'Neill 1,217 87 10
10 Brown 1,135 81 11
11 Mullan 1,079 77 12
12 Stewart 1,022 73 9
13 Moore 948 68 13
14 Gallagher 875 63 14
15 Wilson 799 57 15
16 Henry 793 57 17
17 McKenna 725 52 18
18 Johnston 723 52 16
19 Thompson 684 49 19
20 Anderson 683 49 22
21 Kennedy 629 45 20
22 O'Connor 608 44 21
23 Martin 602 43 23
24 Murray 593 42 24
25 Boyle 571 41 28

The 1901 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 Londonderry

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

  1. O'Kane 7.91× 1,954 people · 140 per 10,000
  2. Doherty 4.69× 2,815 people · 201 per 10,000
  3. McLaughlin 4.53× 2,097 people · 150 per 10,000
  4. Stewart 3.26× 1,022 people · 73 per 10,000
  5. Campbell 2.69× 1,218 people · 87 per 10,000
  6. McKenna 2.66× 725 people · 52 per 10,000
  7. Scott 2.2× 538 people · 39 per 10,000
  8. Hamilton 2.01× 525 people · 38 per 10,000
  9. Moore 1.93× 948 people · 68 per 10,000
  10. Brown 1.89× 1,135 people · 81 per 10,000

Questions about surnames in Londonderry

What is the most common surname in County Londonderry?

In the 1911 census the most common surname in Co. Londonderry was Doherty, with 2,815 people, or about one resident in 50. The next most common were McLaughlin, O'Kane, Kelly and Bradley.

Which surnames are most typical of County Londonderry?

Compared with Ireland as a whole, the names most over-represented in Co. Londonderry in 1911 (among the 100 commonest Irish surnames) were O'Kane (7.91× the national rate), Doherty (4.69× the national rate), McLaughlin (4.53× the national rate).

Ancestors from County Londonderry?

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

Londonderry records on irishcensus.com