| Buckinghamshire | 6 |
| Cambridgeshire | 13 |
| Cheshire | 7 |
| Carmarthenshire | 4 |
| Cornwall | 1 |
| Derbyshire | 17 |
| Devon | 48 |
| Dorset | 8 |
| Durham | 3 |
| Essex | 1 |
| Glamorgan | 1 |
| Gloucestershire | 35 |
| Hampshire | 26 |
| Herefordshire | 56 |
| Hertfordshire | 3 |
| Hunts and Rutland | 3 |
| Isle of Man | 1 |
| Kent | 44 |
| Lancashire | 81 |
| Lincolnshire | 27 |
| London | 149 |
| Middlesex | 3 |
| Montgomeryshire | 3 |
| Monmouthshire | 6 |
| Northumberland | 2 |
| Norfolk | 31 |
| Nottinghamshire | 10 |
| Oxfordshire | 1 |
| Pembrokeshire | 18 |
| Shropshire | 1 |
| Suffolk | 2 |
| Somerset | 8 |
| Surrey | 7 |
| Sussex | 6 |
| Staffordshire | 229 |
| Warwickshire | 75 |
| Westmorland | 3 |
| Wiltshire | 3 |
| Worcestershire | 82 |
| Yorkshire | 53 |
| Anglesey | 0 |
| Bedfordshire | 0 |
| Brecknockshire | 0 |
| Berkshire | 0 |
| Carnarvonshire | 0 |
| Cardiganshire | 0 |
| Channel Islands | 0 |
| Cumberland | 0 |
| Denbighshire | 0 |
| Flintshire | 0 |
| Leicestershire | 0 |
| Merionethshire | 0 |
| Northamptonshire | 0 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| Agricultural Labourer | 49 |
| Female Servant | 43 |
| Independent | 27 |
| Labourer | 24 |
| Male Servant | 17 |
| Farmer | 9 |
| Carpenter | 9 |
| Nailor | 9 |
| Shoe Maker | 8 |
| Smith | 7 |
| Nail Maker | 6 |
| Ag Labourer | 5 |
| Apprentice | 5 |
| Gardener | 5 |
| Tailor | 5 |
| Hawker | 4 |
| Cotton Weaver | 4 |
| Basket Maker | 4 |
| Butcher | 4 |
| Blacksmith | 4 |
| Potter | 4 |
| Merchant | 3 |
| Servant | 3 |
| Glass Maker | 3 |
| Plater | 3 |
| Name | Census Frequency |
|---|---|
| Mary Rock | 992 |
| William Rock | 842 |
| John Rock | 823 |
| Thomas Rock | 599 |
| Elizabeth Rock | 559 |
| James Rock | 542 |
| Sarah Rock | 515 |
| George Rock | 417 |
| Joseph Rock | 384 |
| Ann Rock | 339 |
| Henry Rock | 255 |
| Eliza Rock | 208 |
| Jane Rock | 208 |
| Edward Rock | 201 |
| Ellen Rock | 201 |
| Annie Rock | 196 |
| Charles Rock | 190 |
| Alice Rock | 173 |
| Catherine Rock | 160 |
| Margaret Rock | 159 |
| Emma Rock | 143 |
| Samuel Rock | 136 |
| Martha Rock | 135 |
| Frederick Rock | 124 |
| Alfred Rock | 122 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | Rook | 75% | 14,526 |
| 2 | Rock | 100% | 13,971 |
| 3 | Ruck | 75% | 6,418 |
| 4 | Rick | 75% | 3,752 |
| 5 | Roch | 75% | 1,966 |
| 6 | Rocke | 80% | 1,189 |
| 7 | Reck | 75% | 812 |
| 8 | Rack | 75% | 694 |
| 9 | Roack | 80% | 291 |
| 10 | Rooch | 60% | 143 |
| 11 | Roc | 75% | 124 |
| 12 | Rickie | 50% | 107 |
| 13 | Erick | 60% | 104 |
The surname Rock is the 2nd most popular variant of Rook.