Ayr tops the ranking, with 3 letters, ahead of Bix and Bow. The full ranking is below, each entry linked to its page.

# Town County Letters
1 Ayr South Ayrshire 3
2 Bix Oxfordshire 3
3 Bow Devon 3
4 Cam Gloucestershire 3
5 Col Na h-Eileanan an Iar 3
6 Cwm Blaenau Gwent 3
7 Ely Cambridgeshire 3
8 Ham Wiltshire 3
9 Ide Devon 3
10 Law South Lanarkshire 3
11 Par Cornwall 3
12 Rhu Argyll and Bute 3
13 Rye East Sussex 3
14 Wem Shropshire 3
15 Wix Essex 3
16 Wye Kent 3
17 Acle Norfolk 4
18 Alne North Yorkshire 4
19 Alva Clackmannanshire 4
20 Bath Somerset 4
21 Beal North Yorkshire 4
22 Bean Kent 4
23 Beer Devon 4
24 Bole Nottinghamshire 4
25 Brae Shetland Islands 4
26 Bray Berkshire 4
27 Bude Cornwall 4
28 Burn North Yorkshire 4
29 Caol Highland 4
30 Clun Shropshire 4
31 Dale Pembrokeshire 4
32 Deal Kent 4
33 Deri Caerphilly 4
34 Diss Norfolk 4
35 Drax North Yorkshire 4
36 Duns Scottish Borders 4
37 Edge Gloucestershire 4
38 Embo Highland 4
39 Eton Berkshire 4
40 Ewen Gloucestershire 4
41 Eyam Derbyshire 4
42 Eyke Suffolk 4
43 Fogo Scottish Borders 4
44 Ford Shropshire 4
45 Hart County Durham 4
46 Hose Leicestershire 4
47 Iden East Sussex 4
48 Iver Buckinghamshire 4
49 Jump South Yorkshire 4
50 Leek Staffordshire 4
51 Lees Greater Manchester 4
52 Liff Angus 4
53 Liss Hampshire 4
54 Llay Wrexham 4
55 Lode Cambridgeshire 4
56 Looe Cornwall 4
57 Lund East Riding of Yorkshire 4
58 Lydd Kent 4
59 Lymm Cheshire 4
60 Lyng Norfolk 4

Source: Postcodes UK place data. Compiled by Postcodes UK.

Frequently asked questions

What is the shortest town name in Britain?

Ayr tops the list, with 3 letters, followed by Bix and Bow.

How is this ranking measured?

This ranking is based on Postcodes UK place data. It covers Britain's recognised built-up areas.