| Bedfordshire | 4 |
| Buckinghamshire | 1 |
| Berkshire | 4 |
| Cambridgeshire | 3 |
| Channel Islands | 0 |
| Cheshire | 10 |
| Cornwall | 1 |
| Cumberland | 11 |
| Derbyshire | 8 |
| Devon | 16 |
| Dorset | 4 |
| Durham | 50 |
| Essex | 29 |
| Gloucestershire | 25 |
| Hampshire | 47 |
| Herefordshire | 9 |
| Hertfordshire | 10 |
| Huntingdonshire (and Rutland) | 2 |
| Isle of Man | 0 |
| Kent | 357 |
| Lancashire | 162 |
| Leicestershire | 2 |
| Lincolnshire | 6 |
| London | 307 |
| Middlesex | 44 |
| Northumberland | 29 |
| Norfolk | 12 |
| Northamptonshire | 11 |
| Nottinghamshire | 5 |
| Oxfordshire | 13 |
| Rutland (and Huntingdonshire) | 2 |
| Shropshire | 0 |
| Suffolk | 5 |
| Somerset | 6 |
| Surrey | 32 |
| Sussex | 35 |
| Staffordshire | 15 |
| Warwickshire | 7 |
| Westmorland | 0 |
| Wiltshire | 2 |
| Worcestershire | 0 |
| Yorkshire | 66 |
| Anglesey | 0 |
| Brecknockshire | 3 |
| Cardiganshire | 0 |
| Carnarvonshire | 0 |
| Carmarthenshire | 0 |
| Denbighshire | 1 |
| Flintshire | 2 |
| Glamorgan | 5 |
| Merionethshire | 0 |
| Montgomeryshire | 0 |
| Monmouthshire | 13 |
| Pembrokeshire | 2 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| General Labourer | 24 |
| Living On Own Means | 13 |
| Scholar | 13 |
| Farmer | 11 |
| Agricultural Labourer | 9 |
| Dress Maker | 8 |
| Domestic Servant | 7 |
| General Servant Domestic | 7 |
| Cotton Weaver | 7 |
| Butcher | 7 |
| Blacksmith | 6 |
| Carpenter | 6 |
| Bricklayer Labourer | 5 |
| School | 5 |
| Servant Domestic | 5 |
| Coal Miner Hewer | 5 |
| Cotton Spinner | 5 |
| Dressmaker | 5 |
| Farmers Son F Rel | 5 |
| Ordinary Agricultural Labourer | 5 |
| House Decorator | 4 |
| Housemaid Domestic | 4 |
| Laundress Wash | 4 |
| School Boy | 4 |
| Gardener Domestic | 4 |
| Name | Census Frequency |
|---|---|
| Mary Millen | 536 |
| John Millen | 514 |
| William Millen | 427 |
| George Millen | 352 |
| Elizabeth Millen | 314 |
| James Millen | 312 |
| Thomas Millen | 305 |
| Sarah Millen | 287 |
| Ann Millen | 181 |
| Charles Millen | 178 |
| Henry Millen | 175 |
| Ellen Millen | 143 |
| Jane Millen | 143 |
| Eliza Millen | 134 |
| Emma Millen | 129 |
| Frederick Millen | 117 |
| Annie Millen | 115 |
| Alfred Millen | 114 |
| Alice Millen | 114 |
| Margaret Millen | 111 |
| Emily Millen | 102 |
| Robert Millen | 101 |
| Joseph Millen | 97 |
| Edward Millen | 96 |
| Richard Millen | 92 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | Mullen | 83% | 11,823 |
| 2 | Millen | 100% | 8,763 |
| 3 | Mullin | 67% | 6,793 |
| 4 | Mellon | 67% | 4,325 |
| 5 | Mallen | 83% | 3,662 |
| 6 | Mallin | 67% | 2,829 |
| 7 | Millin | 83% | 2,566 |
| 8 | Millan | 83% | 2,341 |
| 9 | Mallon | 67% | 2,296 |
| 10 | Mullan | 67% | 1,209 |
| 11 | Mallion | 57% | 1,019 |
| 12 | Millon | 83% | 1,012 |
| 13 | Mellin | 67% | 973 |
| 14 | Million | 71% | 759 |
| 15 | Mullon | 67% | 521 |
| 16 | Moullin | 57% | 453 |
| 17 | Mallan | 67% | 451 |
| 18 | Mellen | 83% | 451 |
| 19 | Mullane | 57% | 410 |
| 20 | Mellan | 67% | 297 |
| 21 | Mollon | 67% | 294 |
| 22 | Millian | 71% | 284 |
| 23 | Maullin | 57% | 264 |
| 24 | Milen | 83% | 204 |
| 25 | Mollan | 67% | 185 |
| 26 | Milon | 67% | 169 |
| 27 | Millne | 67% | 156 |
| 28 | Mollen | 83% | 124 |
The surname Millen is the 2nd most popular variant of Mullen.