| Bedfordshire | 0 |
| Buckinghamshire | 0 |
| Berkshire | 0 |
| Cambridgeshire | 0 |
| Channel Islands | 15 |
| Cheshire | 6 |
| Cornwall | 0 |
| Cumberland | 6 |
| Derbyshire | 1 |
| Devon | 1 |
| Dorset | 0 |
| Durham | 9 |
| Essex | 3 |
| Gloucestershire | 1 |
| Hampshire | 8 |
| Herefordshire | 0 |
| Hertfordshire | 0 |
| Huntingdonshire | 0 |
| Isle of Man | 0 |
| Kent | 0 |
| Lancashire | 11 |
| Leicestershire | 0 |
| Lincolnshire | 1 |
| London | 28 |
| Middlesex | 4 |
| Northumberland | 1 |
| Norfolk | 1 |
| Northamptonshire | 0 |
| Nottinghamshire | 0 |
| Oxfordshire | 1 |
| Rutland | 0 |
| Shropshire | 0 |
| Suffolk | 5 |
| Somerset | 2 |
| Surrey | 0 |
| Sussex | 1 |
| Staffordshire | 0 |
| Warwickshire | 0 |
| Westmorland | 0 |
| Wiltshire | 0 |
| Worcestershire | 0 |
| Yorkshire | 4 |
| Anglesey | 0 |
| Brecknockshire | 0 |
| Cardiganshire | 0 |
| Carnarvonshire | 0 |
| Carmarthenshire | 0 |
| Denbighshire | 0 |
| Flintshire | 0 |
| Glamorgan | 1 |
| Merionethshire | 0 |
| Montgomeryshire | 0 |
| Monmouthshire | 8 |
| Pembrokeshire | 0 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| Scholar | 20 |
| Agricultural's Help | 2 |
| Domestic Servant | 2 |
| Confectioner | 2 |
| Arsenal Labourer | 2 |
| General Labourer | 2 |
| General Servant Domestic | 2 |
| Domestic Servant Housekeeper | 1 |
| Clerk | 1 |
| Draper's Assistant | 1 |
| Hardware Dealer | 1 |
| General Worker | 1 |
| Sales Man | 1 |
| Cook | 1 |
| Cook Godsman | 1 |
| E R A Chief | 1 |
| Book Seller's Assistant | 1 |
| Carpenters Apprentice | 1 |
| Clothes Maker | 1 |
| Dock Labourer | 1 |
| Merchant | 1 |
| Brick Layer's Labourer | 1 |
| Char Woman | 1 |
| Land Engineer | 1 |
| Laundress | 1 |
| Name | Census Frequency |
|---|---|
| John Ahearn | 61 |
| Mary Ahearn | 47 |
| William Ahearn | 35 |
| James Ahearn | 26 |
| Catherine Ahearn | 21 |
| Patrick Ahearn | 20 |
| Michael Ahearn | 19 |
| Thomas Ahearn | 18 |
| Ellen Ahearn | 17 |
| Daniel Ahearn | 14 |
| Margaret Ahearn | 12 |
| Elizabeth Ahearn | 11 |
| Bridget Ahearn | 10 |
| George Ahearn | 8 |
| Hannah Ahearn | 8 |
| Maria Ahearn | 8 |
| Ann Ahearn | 7 |
| Annie Ahearn | 6 |
| Francis Ahearn | 6 |
| Henry Ahearn | 6 |
| Joseph Ahearn | 6 |
| Sarah Ahearn | 6 |
| Stephen Ahearn | 6 |
| Agnes Ahearn | 5 |
| Alice Ahearn | 5 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | Horn | 50% | 42,790 |
| 2 | Horne | 33% | 38,395 |
| 3 | Hearn | 83% | 26,780 |
| 4 | Heron | 50% | 11,919 |
| 5 | Hearne | 67% | 7,701 |
| 6 | Horan | 33% | 6,750 |
| 7 | Hurn | 50% | 4,960 |
| 8 | Hern | 67% | 4,894 |
| 9 | Harn | 67% | 3,451 |
| 10 | Herne | 50% | 3,093 |
| 11 | Ahern | 83% | 2,307 |
| 12 | Hiron | 33% | 1,944 |
| 13 | Harne | 50% | 1,529 |
| 14 | Hurne | 33% | 1,492 |
| 15 | Ahearn | 100% | 607 |
| 16 | Haran | 50% | 565 |
| 17 | Haron | 50% | 552 |
| 18 | Heiron | 50% | 397 |
| 19 | Aherne | 67% | 321 |
| 20 | Hearon | 67% | 252 |
| 21 | Hiern | 50% | 229 |
| 22 | Horian | 17% | 168 |
| 23 | Horon | 33% | 138 |
| 24 | Horen | 33% | 137 |
| 25 | Haren | 50% | 134 |
| 26 | Ahearne | 86% | 129 |
| 27 | Heran | 50% | 128 |
| 28 | Hourne | 33% | 121 |
| 29 | Heren | 50% | 110 |
| 30 | Hoarn | 67% | 105 |
| 31 | Herin | 50% | 102 |
| 32 | Hurine | 17% | 100 |
The surname Ahearn is the 15th most popular variant of Horn.