| Bedfordshire | 0 |
| Buckinghamshire | 0 |
| Berkshire | 0 |
| Cambridgeshire | 0 |
| Channel Islands | 0 |
| Cheshire | 0 |
| Cornwall | 0 |
| Cumberland | 0 |
| Derbyshire | 0 |
| Devon | 2 |
| Dorset | 0 |
| Durham | 5 |
| Essex | 22 |
| Gloucestershire | 0 |
| Hampshire | 1 |
| Herefordshire | 0 |
| Hertfordshire | 1 |
| Huntingdonshire | 0 |
| Isle of Man | 0 |
| Kent | 0 |
| Lancashire | 8 |
| Leicestershire | 0 |
| Lincolnshire | 0 |
| London | 79 |
| Middlesex | 17 |
| Northumberland | 4 |
| Norfolk | 0 |
| Northamptonshire | 0 |
| Nottinghamshire | 0 |
| Oxfordshire | 0 |
| Rutland | 0 |
| Shropshire | 0 |
| Suffolk | 0 |
| Somerset | 0 |
| Surrey | 2 |
| Sussex | 3 |
| Staffordshire | 6 |
| Warwickshire | 2 |
| Westmorland | 0 |
| Wiltshire | 0 |
| Worcestershire | 1 |
| Yorkshire | 2 |
| Anglesey | 0 |
| Brecknockshire | 0 |
| Cardiganshire | 0 |
| Carnarvonshire | 0 |
| Carmarthenshire | 0 |
| Denbighshire | 0 |
| Flintshire | 0 |
| Glamorgan | 11 |
| Merionethshire | 0 |
| Montgomeryshire | 0 |
| Monmouthshire | 2 |
| Pembrokeshire | 1 |
| Radnorshire | 0 |
| Profession | Census Frequency |
|---|---|
| School | 14 |
| Assisting In Business | 4 |
| Clerk | 3 |
| Shop Assistant | 2 |
| Shop Keeper | 2 |
| A B Seaman | 2 |
| Engineer | 2 |
| Seaman | 2 |
| (general) Carpenter | 1 |
| Agent (condensed Milk) | 1 |
| Seamen Merchant Ships | 1 |
| Commercial Traveller | 1 |
| Apprentice | 1 |
| Compositor | 1 |
| Hours Iressors Assistant | 1 |
| Laundry Hand | 1 |
| Mantle Maker | 1 |
| Office Boy (solicitors) | 1 |
| Pattern Maker | 1 |
| Riveter Loco | 1 |
| School Girl | 1 |
| Sewer Flusher | 1 |
| Able Seaman | 1 |
| Mate | 1 |
| Carpenter & Joiner | 1 |
| Name | Census Frequency |
|---|---|
| John Jansen | 41 |
| Mary Jansen | 34 |
| Henry Jansen | 23 |
| William Jansen | 21 |
| Sarah Jansen | 20 |
| Elizabeth Jansen | 19 |
| Charles Jansen | 17 |
| George Jansen | 17 |
| James Jansen | 16 |
| Thomas Jansen | 12 |
| Ellen Jansen | 11 |
| Ernest Jansen | 10 |
| Eliza Jansen | 9 |
| Jane Jansen | 9 |
| Alice Jansen | 8 |
| Benjamin Jansen | 8 |
| Hannah Jansen | 8 |
| Louisa Jansen | 8 |
| Peter Jansen | 8 |
| Alfred Jansen | 7 |
| Ann Jansen | 7 |
| Catherine Jansen | 7 |
| Edward Jansen | 7 |
| Emily Jansen | 7 |
| Jacob Jansen | 7 |
| Rank | Surname | Match | Census Frequency |
|---|---|---|---|
| 1 | Janson | 83% | 5,757 |
| 2 | Jonson | 67% | 3,650 |
| 3 | Jenson | 67% | 2,204 |
| 4 | Joinson | 57% | 1,934 |
| 5 | Jensen | 83% | 1,352 |
| 6 | Janeson | 71% | 866 |
| 7 | Jansen | 100% | 684 |
| 8 | Jenison | 57% | 648 |
| 9 | Jinson | 67% | 431 |
| 10 | Joneson | 57% | 393 |
| 11 | Jainson | 71% | 131 |
| 12 | Jansson | 71% | 121 |
The surname Jansen is the 7th most popular variant of Janson.