| Bedfordshire | 0 |
| Buckinghamshire | 0 |
| Berkshire | 1 |
| Cambridgeshire | 1 |
| Channel Islands | 0 |
| Cheshire | 13 |
| Cornwall | 1 |
| Cumberland | 0 |
| Derbyshire | 1 |
| Devon | 0 |
| Dorset | 0 |
| Durham | 6 |
| Essex | 7 |
| Gloucestershire | 0 |
| Hampshire | 0 |
| Herefordshire | 0 |
| Hertfordshire | 0 |
| Huntingdonshire | 0 |
| Isle of Man | 0 |
| Kent | 3 |
| Lancashire | 47 |
| Leicestershire | 3 |
| Lincolnshire | 0 |
| London | 28 |
| Middlesex | 9 |
| Northumberland | 1 |
| Norfolk | 0 |
| Northamptonshire | 0 |
| Nottinghamshire | 0 |
| Oxfordshire | 0 |
| Rutland | 0 |
| Shropshire | 0 |
| Suffolk | 0 |
| Somerset | 0 |
| Surrey | 0 |
| Sussex | 1 |
| Staffordshire | 8 |
| Warwickshire | 32 |
| Westmorland | 0 |
| Wiltshire | 1 |
| Worcestershire | 0 |
| Yorkshire | 9 |
| Anglesey | 0 |
| Brecknockshire | 0 |
| Cardiganshire | 0 |
| Carnarvonshire | 0 |
| Carmarthenshire | 0 |
| Denbighshire | 0 |
| Flintshire | 0 |
| Glamorgan | 2 |
| Merionethshire | 0 |
| Montgomeryshire | 0 |
| Monmouthshire | 0 |
| Pembrokeshire | 0 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| School | 24 |
| At Home | 3 |
| Brass Founder (warehouse) | 3 |
| Domestic Servant | 2 |
| Cotton Weaver | 2 |
| Factory Operative | 2 |
| Labourer | 2 |
| Beamer Cotton | 1 |
| Coloured Winder Cotton | 1 |
| Cotton Yarn Piecer S Room | 1 |
| Dattager In Coal Mine | 1 |
| Dock Labourer | 1 |
| Nurse | 1 |
| Ladies Maid | 1 |
| Card Noom Hand | 1 |
| Cattle Drover | 1 |
| Errand Boy | 1 |
| General Labourer | 1 |
| General Servant Domestic | 1 |
| Labour | 1 |
| Soap Trapper | 1 |
| Copper Labourer Coopers | 1 |
| Blacksmiths Striker | 1 |
| Colliery Surface Coal Loader | 1 |
| Surface Labourer (colliery) | 1 |
| Name | Census Frequency |
|---|---|
| John Castello | 45 |
| Mary Castello | 41 |
| Thomas Castello | 27 |
| William Castello | 20 |
| Margaret Castello | 18 |
| James Castello | 15 |
| Sarah Castello | 15 |
| Elizabeth Castello | 11 |
| Ellen Castello | 11 |
| Edward Castello | 10 |
| Annie Castello | 9 |
| Catherine Castello | 9 |
| Michael Castello | 9 |
| George Castello | 8 |
| Patrick Castello | 8 |
| Bridget Castello | 7 |
| Ann Castello | 6 |
| Charles Castello | 5 |
| Jane Castello | 5 |
| Martha Castello | 5 |
| Amelia Castello | 4 |
| Eliza Castello | 4 |
| Hannah Castello | 4 |
| Henry Castello | 4 |
| Robert Castello | 4 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | Costello | 88% | 7,711 |
| 2 | Castell | 88% | 3,726 |
| 3 | Costella | 75% | 820 |
| 4 | Costall | 63% | 528 |
| 5 | Castello | 100% | 457 |
| 6 | Castelli | 88% | 405 |
| 7 | Costell | 75% | 275 |
| 8 | Costelloe | 78% | 216 |
| 9 | Costelle | 75% | 153 |
The surname Castello is the 5th most popular variant of Costello.