| Bedfordshire | 0 |
| Buckinghamshire | 0 |
| Berkshire | 0 |
| Cambridgeshire | 0 |
| Channel Islands | 5 |
| Cheshire | 7 |
| Cornwall | 0 |
| Cumberland | 0 |
| Derbyshire | 0 |
| Devon | 0 |
| Dorset | 0 |
| Durham | 8 |
| Essex | 0 |
| Gloucestershire | 0 |
| Hampshire | 0 |
| Herefordshire | 0 |
| Hertfordshire | 2 |
| Huntingdonshire | 0 |
| Isle of Man | 0 |
| Kent | 0 |
| Lancashire | 2 |
| Leicestershire | 4 |
| Lincolnshire | 0 |
| London | 4 |
| Middlesex | 0 |
| Northumberland | 0 |
| Norfolk | 0 |
| Northamptonshire | 0 |
| Nottinghamshire | 1 |
| Oxfordshire | 0 |
| Rutland | 0 |
| Shropshire | 0 |
| Suffolk | 0 |
| Somerset | 0 |
| Surrey | 1 |
| Sussex | 0 |
| Staffordshire | 0 |
| Warwickshire | 0 |
| Westmorland | 0 |
| Wiltshire | 0 |
| Worcestershire | 0 |
| Yorkshire | 1 |
| Anglesey | 0 |
| Brecknockshire | 0 |
| Cardiganshire | 0 |
| Carnarvonshire | 0 |
| Carmarthenshire | 0 |
| Denbighshire | 0 |
| Flintshire | 4 |
| Glamorgan | 4 |
| Merionethshire | 0 |
| Montgomeryshire | 0 |
| Monmouthshire | 0 |
| Pembrokeshire | 0 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| No Occupation | 3 |
| Chemical Labourer Alk | 2 |
| Boot Maker | 1 |
| Dock Labourer | 1 |
| Navvy | 1 |
| House Keeper Domestic | 1 |
| Clerk | 1 |
| Builder Labourer | 1 |
| Student | 1 |
| Charwoman | 1 |
| Coal Miner C Hewer Down | 1 |
| Hosiery Seamer | 1 |
| General Servant Domstic | 1 |
| Housemaid Domestic | 1 |
| Midwife | 1 |
| Scholar | 1 |
| Station Master | 1 |
| Coal Weighing Clerk | 1 |
| Railway Brakesman | 1 |
| Agricultural Labourer Ordinary | 1 |
| General Labourer Ordinary | 1 |
| General Servant Domestic | 1 |
| Hawker | 1 |
| None | 1 |
| Excise Assistant | 1 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | Costello | 89% | 7,711 |
| 2 | Castell | 67% | 3,726 |
| 3 | Costella | 78% | 820 |
| 4 | Costall | 67% | 528 |
| 5 | Castello | 78% | 457 |
| 6 | Castelli | 67% | 405 |
| 7 | Costell | 78% | 275 |
| 8 | Costelloe | 100% | 216 |
| 9 | Costelle | 89% | 153 |
The surname Costelloe is the 8th most popular variant of Costello.