| Bedfordshire | 0 |
| Buckinghamshire | 11 |
| Berkshire | 3 |
| Cambridgeshire | 2 |
| Channel Islands | 3 |
| Cheshire | 41 |
| Cornwall | 13 |
| Cumberland | 3 |
| Derbyshire | 33 |
| Devon | 49 |
| Dorset | 9 |
| Durham | 65 |
| Essex | 31 |
| Gloucestershire | 44 |
| Hampshire | 24 |
| Herefordshire | 48 |
| Hertfordshire | 3 |
| Huntingdonshire (and Rutland) | 2 |
| Isle of Man | 0 |
| Kent | 43 |
| Lancashire | 238 |
| Leicestershire | 5 |
| Lincolnshire | 34 |
| London | 377 |
| Middlesex | 23 |
| Northumberland | 25 |
| Norfolk | 23 |
| Northamptonshire | 9 |
| Nottinghamshire | 35 |
| Oxfordshire | 3 |
| Rutland (and Huntingdonshire) | 2 |
| Shropshire | 22 |
| Suffolk | 13 |
| Somerset | 18 |
| Surrey | 39 |
| Sussex | 11 |
| Staffordshire | 509 |
| Warwickshire | 114 |
| Westmorland | 1 |
| Wiltshire | 7 |
| Worcestershire | 99 |
| Yorkshire | 165 |
| Anglesey | 0 |
| Brecknockshire | 4 |
| Cardiganshire | 0 |
| Carnarvonshire | 1 |
| Carmarthenshire | 0 |
| Denbighshire | 3 |
| Flintshire | 0 |
| Glamorgan | 39 |
| Merionethshire | 0 |
| Montgomeryshire | 6 |
| Monmouthshire | 23 |
| Pembrokeshire | 27 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| Scholar | 339 |
| Coal Miner | 33 |
| General Labourer | 32 |
| Agricultural Labourer | 31 |
| Domestic Servant | 28 |
| Labourer | 26 |
| Dress Maker | 21 |
| General Servant | 20 |
| Chain Maker | 20 |
| Blacksmith | 13 |
| Gardener | 11 |
| Market Gardener | 9 |
| Hawker | 9 |
| Clerk | 9 |
| Living On Own Means | 8 |
| Living On Her Own Means | 8 |
| Farmer | 8 |
| Errand Boy | 8 |
| Tailoress | 8 |
| Laundress | 8 |
| Charwoman | 7 |
| Farm Labourer | 6 |
| General Servant Domestic | 6 |
| Commercial Clerk | 6 |
| Nail Maker | 6 |
| 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.