This is a list of historic counties of England by area as at the 1831 census.[1] Note that Monmouthshire was considered to be part of England at the time.
| Rank | County | Area | |
|---|---|---|---|
| 1 | Yorkshire | 3669510acres [2] | |
| 2 | Lincolnshire | 1663850acres | |
| 3 | Devon | 1636450acres | |
| 4 | Norfolk | 1292300acres | |
| 5 | Northumberland | 1165430acres | |
| 6 | Somerset | 1028090acres | |
| 7 | Hampshire | 1018550acres | |
| 8 | Essex | 979000acres | |
| 9 | Lancashire | 977260acres | |
| 10 | Kent | 972240acres | |
| 11 | Cumberland | 969490acres | |
| 12 | Suffolk | 918760acres | |
| 13 | Sussex | 907920acres | |
| 14 | Wiltshire | 869620acres | |
| 15 | Shropshire | 864360acres | |
| 16 | Cornwall | 854770acres | |
| 17 | Gloucestershire | 790470acres | |
| 18 | Staffordshire | 736290acres | |
| 19 | County Durham | 679530acres | |
| 20 | Derbyshire | 663180acres | |
| 21 | Cheshire | 649050acres | |
| 22 | Northamptonshire | 646810acres | |
| 23 | Dorset | 627220acres | |
| 24 | Warwickshire | 567930acres | |
| 25 | Herefordshire | 543800acres | |
| 26 | Cambridgeshire | 536853acres | |
| 27 | Nottinghamshire | 525800acres | |
| 28 | Leicestershire | 511340acres | |
| 29 | Westmorland | 485990acres | |
| 30 | Surrey | 474480acres | |
| 31 | Berkshire | 472270acres | |
| 32 | Oxfordshire | 467380acres | |
| 33 | Buckinghamshire | 463820acres | |
| 34 | Worcestershire | 459710acres | |
| 35 | Hertfordshire | 400370acres | |
| 36 | Monmouthshire | 324310acres | |
| 37 | Bedfordshire | 297632acres | |
| 38 | Huntingdonshire | 241690acres | |
| 39 | Middlesex | 179590acres | |
| 40 | Rutland | 97500acres |