| Bedfordshire | 0 |
| Buckinghamshire | 12 |
| Berkshire | 0 |
| Cambridgeshire | 5 |
| Channel Islands | 28 |
| Cheshire | 31 |
| Cornwall | 67 |
| Cumberland | 0 |
| Derbyshire | 3 |
| Devon | 334 |
| Dorset | 4 |
| Durham | 28 |
| Essex | 67 |
| Gloucestershire | 56 |
| Hampshire | 96 |
| Herefordshire | 0 |
| Hertfordshire | 8 |
| Huntingdonshire | 0 |
| Isle of Man | 1 |
| Kent | 22 |
| Lancashire | 54 |
| Leicestershire | 14 |
| Lincolnshire | 29 |
| London | 328 |
| Middlesex | 5 |
| Northumberland | 7 |
| Norfolk | 195 |
| Northamptonshire | 2 |
| Nottinghamshire | 15 |
| Oxfordshire | 51 |
| Rutland | 0 |
| Shropshire | 3 |
| Suffolk | 49 |
| Somerset | 129 |
| Surrey | 9 |
| Sussex | 9 |
| Staffordshire | 49 |
| Warwickshire | 2 |
| Westmorland | 0 |
| Wiltshire | 20 |
| Worcestershire | 16 |
| Yorkshire | 63 |
| Anglesey | 0 |
| Brecknockshire | 1 |
| Cardiganshire | 0 |
| Carnarvonshire | 0 |
| Carmarthenshire | 3 |
| Denbighshire | 0 |
| Flintshire | 0 |
| Glamorgan | 34 |
| Merionethshire | 0 |
| Montgomeryshire | 1 |
| Monmouthshire | 18 |
| Pembrokeshire | 11 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| Scholar | 306 |
| Agricultural Labourer | 78 |
| House Servant | 32 |
| Labourer | 25 |
| Tailor | 25 |
| Servant | 22 |
| Dress Maker | 21 |
| Carpenter | 18 |
| House Keeper | 17 |
| Carter | 14 |
| House Maid | 12 |
| Ag Labourer | 9 |
| Laundress | 9 |
| Farmers Daughter | 8 |
| Farmers Son | 8 |
| General Servant | 8 |
| Farmer's Son | 7 |
| Butcher | 7 |
| Dressmaker | 7 |
| Ag Lab | 7 |
| Blacksmith | 6 |
| Porter | 6 |
| Painter | 6 |
| Domestic Servant | 6 |
| Cook | 5 |
| Name | Census Frequency |
|---|---|
| William Brock | 1,472 |
| Mary Brock | 1,333 |
| John Brock | 1,083 |
| Elizabeth Brock | 918 |
| George Brock | 668 |
| James Brock | 644 |
| Sarah Brock | 573 |
| Thomas Brock | 561 |
| Charles Brock | 433 |
| Ann Brock | 408 |
| Henry Brock | 390 |
| Eliza Brock | 314 |
| Jane Brock | 297 |
| Frederick Brock | 270 |
| Emma Brock | 266 |
| Samuel Brock | 258 |
| Ellen Brock | 246 |
| Robert Brock | 244 |
| Richard Brock | 235 |
| Alice Brock | 221 |
| Emily Brock | 216 |
| Annie Brock | 208 |
| Edward Brock | 205 |
| Arthur Brock | 196 |
| Joseph Brock | 193 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | Brook | 80% | 95,789 |
| 2 | Brock | 100% | 20,149 |
| 3 | Brick | 80% | 7,966 |
| 4 | Brack | 80% | 2,357 |
| 5 | Birck | 60% | 2,029 |
| 6 | Broch | 80% | 717 |
| 7 | Bruck | 80% | 266 |
| 8 | Burck | 60% | 227 |
| 9 | Breck | 80% | 215 |
| 10 | Brockie | 71% | 209 |
| 11 | Brocq | 80% | 176 |
| 12 | Berck | 60% | 155 |
| 13 | Broock | 83% | 126 |
The surname Brock is the 2nd most popular variant of Brook.