Isles of Scilly tops the ranking, with 49.94°N, ahead of Cornwall and Isle of Wight. The full ranking is below, each entry linked to its page.

# County Latitude
1 Isles of Scilly 49.94°N
2 Cornwall 50.37°N
3 Isle of Wight 50.68°N
4 Devon 50.75°N
5 Dorset 50.81°N
6 East Sussex 50.93°N
7 West Sussex 50.95°N
8 Hampshire 51.05°N
9 Somerset 51.14°N
10 Kent 51.24°N
11 Surrey 51.25°N
12 Wiltshire 51.33°N
13 The Vale of Glamorgan 51.44°N
14 Berkshire 51.45°N
15 Bristol 51.46°N
16 Cardiff 51.50°N
17 Greater London 51.51°N
18 Bridgend 51.55°N
19 Newport 51.58°N
20 Rhondda Cynon Taf 51.62°N
21 Swansea 51.63°N
22 Caerphilly 51.66°N
23 Neath Port Talbot 51.68°N
24 Torfaen 51.69°N
25 Merthyr Tydfil 51.72°N
26 Monmouthshire 51.75°N
27 Oxfordshire 51.76°N
28 Blaenau Gwent 51.76°N
29 Gloucestershire 51.77°N
30 Buckinghamshire 51.81°N
31 Essex 51.81°N
32 Hertfordshire 51.82°N
33 Pembrokeshire 51.83°N
34 Carmarthenshire 51.85°N
35 Bedfordshire 52.07°N
36 Herefordshire 52.10°N
37 Suffolk 52.20°N
38 Worcestershire 52.23°N
39 Ceredigion 52.24°N
40 Northamptonshire 52.28°N
41 Warwickshire 52.32°N
42 Powys 52.34°N
43 Cambridgeshire 52.35°N
44 West Midlands 52.49°N
45 Rutland 52.65°N
46 Shropshire 52.66°N
47 Leicestershire 52.66°N
48 Norfolk 52.67°N
49 Staffordshire 52.87°N
50 Gwynedd 52.94°N
51 Wrexham 53.01°N
52 Nottinghamshire 53.11°N
53 Derbyshire 53.12°N
54 Denbighshire 53.13°N
55 Lincolnshire 53.19°N
56 Conwy 53.20°N
57 Cheshire 53.22°N
58 Flintshire 53.22°N
59 Isle of Anglesey 53.30°N
60 Merseyside 53.44°N
61 South Yorkshire 53.47°N
62 Greater Manchester 53.52°N
63 West Yorkshire 53.74°N
64 Lancashire 53.80°N
65 East Riding of Yorkshire 53.85°N
66 North Yorkshire 54.17°N
67 Cumbria 54.57°N
68 County Durham 54.70°N
69 Tyne and Wear 54.95°N
70 Dumfries and Galloway 55.04°N
71 Northumberland 55.24°N
72 South Ayrshire 55.40°N
73 East Ayrshire 55.53°N
74 Scottish Borders 55.59°N
75 North Ayrshire 55.60°N
76 South Lanarkshire 55.70°N
77 East Renfrewshire 55.79°N
78 Midlothian 55.85°N
79 Glasgow City 55.86°N
80 Renfrewshire 55.86°N
81 North Lanarkshire 55.86°N
82 West Lothian 55.90°N
83 Inverclyde 55.93°N
84 City of Edinburgh 55.94°N
85 East Dunbartonshire 55.94°N
86 West Dunbartonshire 55.95°N
87 East Lothian 55.96°N
88 Falkirk 56.00°N
89 Argyll and Bute 56.13°N
90 Clackmannanshire 56.14°N
91 Stirling 56.16°N
92 Fife 56.21°N
93 Dundee City 56.48°N
94 Perth and Kinross 56.49°N
95 Angus 56.64°N
96 Aberdeen City 57.15°N
97 Aberdeenshire 57.31°N
98 Moray 57.58°N
99 Highland 57.61°N
100 Na h-Eileanan an Iar 57.82°N
101 Orkney Islands 59.08°N
102 Shetland Islands 60.33°N

Source: Ordnance Survey coordinates. Compiled by Postcodes UK.

Frequently asked questions

Which is the most southerly county in the UK?

Isles of Scilly tops the list, with 49.94°N, followed by Cornwall and Isle of Wight.

How is this ranking measured?

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