| Bedfordshire | 0 |
| Buckinghamshire | 0 |
| Berkshire | 3 |
| Cambridgeshire | 0 |
| Channel Islands | 0 |
| Cheshire | 0 |
| Cornwall | 0 |
| Cumberland | 0 |
| Derbyshire | 0 |
| Devon | 0 |
| Dorset | 0 |
| Durham | 0 |
| Essex | 1 |
| Gloucestershire | 0 |
| Hampshire | 0 |
| Herefordshire | 0 |
| Hertfordshire | 0 |
| Huntingdonshire | 0 |
| Isle of Man | 0 |
| Kent | 2 |
| Lancashire | 18 |
| Leicestershire | 0 |
| Lincolnshire | 0 |
| London | 15 |
| Middlesex | 0 |
| Northumberland | 0 |
| Norfolk | 0 |
| Northamptonshire | 0 |
| Nottinghamshire | 0 |
| Oxfordshire | 0 |
| Rutland | 0 |
| Shropshire | 0 |
| Suffolk | 0 |
| Somerset | 0 |
| Surrey | 0 |
| Sussex | 2 |
| Staffordshire | 1 |
| Warwickshire | 0 |
| Westmorland | 0 |
| Wiltshire | 0 |
| Worcestershire | 0 |
| Yorkshire | 0 |
| Anglesey | 0 |
| Brecknockshire | 0 |
| Cardiganshire | 0 |
| Carnarvonshire | 0 |
| Carmarthenshire | 0 |
| Denbighshire | 0 |
| Flintshire | 0 |
| Glamorgan | 3 |
| Merionethshire | 1 |
| Montgomeryshire | 0 |
| Monmouthshire | 0 |
| Pembrokeshire | 0 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| Student | 4 |
| House Painter | 3 |
| Merchant Tailor | 2 |
| General Labourer | 1 |
| Hotel Waiter | 1 |
| Kitchen Porter | 1 |
| Private Means & Foreing Correspondent | 1 |
| School | 1 |
| Teacher Of Language | 1 |
| Telegraphist | 1 |
| Telegraphist Civil Service | 1 |
| Telegraphistist Central Telegraphist Office G P O ( Civil Service) | 1 |
| Assistant In Above Shop | 1 |
| Clerk (shipping) | 1 |
| Errand Boy | 1 |
| Housekeeper | 1 |
| Labourer General | 1 |
| Milk-seller (dairy) | 1 |
| Retired Postman | 1 |
| Shop Assistant | 1 |
| Sorting Clerk Telegraphest | 1 |
| Wine & Spirit Cellarman | 1 |
| Lady's Maid | 1 |
| School Teacher | 1 |
| Secretary Of A Public Company | 1 |
| Name | Census Frequency |
|---|---|
| Mary Castelli | 33 |
| John Castelli | 27 |
| Thomas Castelli | 22 |
| James Castelli | 15 |
| Ann Castelli | 14 |
| Charles Castelli | 14 |
| Margaret Castelli | 14 |
| Elizabeth Castelli | 13 |
| Ellen Castelli | 11 |
| William Castelli | 11 |
| Michael Castelli | 9 |
| Catherine Castelli | 7 |
| Edward Castelli | 7 |
| Bridget Castelli | 5 |
| George Castelli | 5 |
| Sarah Castelli | 5 |
| Angelina Castelli | 4 |
| Eliza Castelli | 4 |
| Maria Castelli | 4 |
| Patrick Castelli | 4 |
| Ernest Castelli | 3 |
| Frank Castelli | 3 |
| Joseph Castelli | 3 |
| Julia Castelli | 3 |
| Stephen Castelli | 3 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | Costello | 75% | 7,711 |
| 2 | Castell | 88% | 3,726 |
| 3 | Costella | 75% | 820 |
| 4 | Costall | 63% | 528 |
| 5 | Castello | 88% | 457 |
| 6 | Castelli | 100% | 405 |
| 7 | Costell | 75% | 275 |
| 8 | Costelloe | 67% | 216 |
| 9 | Costelle | 75% | 153 |
The surname Castelli is the 6th most popular variant of Costello.