Isles of Scilly tops the ranking, with 7 m metres above sea level on average, ahead of East Riding of Yorkshire and Na h-Eileanan an Iar. The full ranking is below, each entry linked to its page.

# County Avg elevation
1 Isles of Scilly 7 m
2 East Riding of Yorkshire 21 m
3 Na h-Eileanan an Iar 24 m
4 Lincolnshire 26 m
5 Orkney Islands 26 m
6 Shetland Islands 27 m
7 Cambridgeshire 28 m
8 Norfolk 30 m
9 Renfrewshire 30 m
10 West Dunbartonshire 34 m
11 Merseyside 36 m
12 Argyll and Bute 37 m
13 Newport 37 m
14 Isle of Wight 38 m
15 Cardiff 40 m
16 Glasgow City 43 m
17 Greater London 43 m
18 Isle of Anglesey 45 m
19 South Ayrshire 45 m
20 North Ayrshire 47 m
21 Suffolk 47 m
22 West Sussex 47 m
23 Bristol 48 m
24 Clackmannanshire 49 m
25 Dundee City 51 m
26 Nottinghamshire 51 m
27 The Vale of Glamorgan 51 m
28 East Lothian 56 m
29 Essex 58 m
30 Falkirk 59 m
31 East Dunbartonshire 61 m
32 East Sussex 63 m
33 Kent 63 m
34 Aberdeen City 64 m
35 Cheshire 65 m
36 Inverclyde 65 m
37 Swansea 66 m
38 Tyne and Wear 66 m
39 City of Edinburgh 69 m
40 Fife 69 m
41 Dumfries and Galloway 70 m
42 Stirling 70 m
43 Hampshire 71 m
44 Highland 71 m
45 Dorset 72 m
46 Bedfordshire 73 m
47 Pembrokeshire 73 m
48 Worcestershire 75 m
49 Surrey 76 m
50 Somerset 79 m
51 Berkshire 83 m
52 East Renfrewshire 91 m
53 Moray 91 m
54 Lancashire 92 m
55 Rutland 94 m
56 Warwickshire 96 m
57 Bridgend 98 m
58 Cornwall 98 m
59 Gloucestershire 98 m
60 Oxfordshire 99 m
61 Carmarthenshire 101 m
62 Hertfordshire 101 m
63 North Yorkshire 101 m
64 Northamptonshire 101 m
65 Cumbria 102 m
66 Leicestershire 103 m
67 South Yorkshire 104 m
68 Northumberland 106 m
69 Wiltshire 106 m
70 Monmouthshire 108 m
71 Neath Port Talbot 108 m
72 Buckinghamshire 109 m
73 Gwynedd 109 m
74 Herefordshire 110 m
75 Aberdeenshire 112 m
76 Wrexham 112 m
77 Angus 115 m
78 Greater Manchester 115 m
79 Devon 117 m
80 Perth and Kinross 119 m
81 North Lanarkshire 126 m
82 Ceredigion 129 m
83 Conwy 129 m
84 East Ayrshire 129 m
85 Flintshire 131 m
86 Shropshire 131 m
87 West Midlands 133 m
88 Staffordshire 139 m
89 County Durham 141 m
90 Denbighshire 142 m
91 West Yorkshire 143 m
92 West Lothian 144 m
93 Derbyshire 155 m
94 Rhondda Cynon Taf 166 m
95 Midlothian 169 m
96 South Lanarkshire 178 m
97 Scottish Borders 181 m
98 Torfaen 188 m
99 Caerphilly 197 m
100 Powys 197 m
101 Merthyr Tydfil 233 m
102 Blaenau Gwent 330 m

Source: Ordnance Survey terrain data. Compiled by Postcodes UK.

Frequently asked questions

Which is the lowest county in Britain?

Isles of Scilly tops the list, with 7 m metres above sea level on average, followed by East Riding of Yorkshire and Na h-Eileanan an Iar.

How is this ranking measured?

This ranking is based on Ordnance Survey terrain data. It covers the ceremonial counties of England and the council and principal areas of Scotland and Wales.