List of counties of England by area in 1815
# List of counties of England by area in 1815

This is a list of historic counties of England by area according to the Arrowsmith map of 1815-6, which was in turn generated from the work of the Ordnance Survey.

| Rank | County | Area |
| - | - | - |
| 1 | Yorkshire | 5,961 sq mi |
| 2 | Lincolnshire | 2,748 sq mi |
| 3 | Devon | 2,579 sq mi |
| 4 | Norfolk | 2,092 sq mi |
| 5 | Northumberland | 1,871 sq mi |
| 6 | Lancashire | 1,831 sq mi |
| 7 | Somerset | 1,642 sq mi |
| 8 | Hampshire | 1,628 sq mi |
| 9 | Kent | 1,537 sq mi |
| 10 | Essex | 1,532 sq mi |
| 11 | Suffolk | 1,512 sq mi |
| 12 | Cumberland | 1,478 sq mi |
| 13 | Sussex | 1,463 sq mi |
| 14 | Wiltshire | 1,379 sq mi |
| 15 | Shropshire | 1,341 sq mi |
| 16 | Cornwall | 1,327 sq mi |
| 17 | Gloucestershire | 1,256 sq mi |
| 18 | Staffordshire | 1,148 sq mi |
| 19 | County Durham | 1,061 sq mi |
| 20 | Cheshire | 1,052 sq mi |
| 21 | Derbyshire | 1,026 sq mi |
| 22 | Northamptonshire | 1,017 sq mi |
| 23 | Dorset | 1,005 sq mi |
| 24 | Warwickshire | 902 sq mi |
| 25 | Herefordshire | 860 sq mi |
| 26 | Cambridgeshire | 858 sq mi |
| 27 | Nottinghamshire | 837 sq mi |
| 28 | Leicestershire | 804 sq mi |
| 29 | Westmorland | 763 sq mi |
| 30 | Surrey | 758 sq mi |
| 31 | Berkshire | 756 sq mi |
| 32 | Oxfordshire | 752 sq mi |
| 33 | Buckinghamshire | 740 sq mi |
| 34 | Worcestershire | 729 sq mi |
| 35 | Hertfordshire | 528 sq mi |
| 36 | Monmouthshire | 498 sq mi |
| 37 | Bedfordshire | 463 sq mi |
| 38 | Huntingdonshire | 370 sq mi |
| 39 | Middlesex | 282 sq mi |
| 40 | Rutland | 149 sq mi |
