| Locality | Post Code |
|---|---|
| Kilninver, Argyll and Bute | PA34 |
| Kingarth, Argyll and Bute | PA20 |
| Kintra, Argyll and Bute | PA66 6BT |
| Kirkapol, Argyll and Bute | PA77 6TW |
| Kirn, Argyll and Bute | PA23 |
| Knipoch, Argyll and Bute | PA34 |
| Lagavulin, Argyll and Bute | PA42 |
| Lagg, Argyll and Bute | PA60 7XQ |
| Laphroaig, Argyll and Bute | PA42 7DU |
| Ledaig, Argyll and Bute | PA37 |
| Ledaig (Tobermory), Argyll and Bute | PA75 |
| Lerags, Argyll and Bute | PA34 4SE |
| Lismore, Argyll and Bute | PA34 |
| Loch Eck, Argyll and Bute | PA23 8SG |
| Lochavich, Argyll and Bute | PA35 1HJ |
| Lochawe, Argyll and Bute | PA33 |
| Lochbuie, Argyll and Bute | PA62 6AA |
| Lochdon, Argyll and Bute | PA64 |
| Lochetive, Argyll and Bute | PA35 1JT |
| Lochgair, Argyll and Bute | PA31 |
| Lochgilphead, Argyll and Bute | PA31 |
| Lochgoilhead, Argyll and Bute | PA24 |
| Lotts, Argyll and Bute | PA42 7DD |
| Luss, Argyll and Bute | G83 |
| Lussagiven, Argyll and Bute | PA60 7XJ |
| Machrihanish, Argyll and Bute | PA28 |