L3 — 11 códigos en 30 localidades (Reino Unido).
| Código postal | Localidad / Distrito | Provincia / Municipio | Coordenadas |
|---|---|---|---|
| Liverpool | Merseyside · England | 53.4106, -2.9779 | |
| Ford | Merseyside · England | 53.4841, -2.9725 | |
| Netherton | Merseyside · England | 53.4796, -2.9625 | |
| Lydiate | Merseyside · England | 53.5305, -2.9548 | |
| Maghull | Merseyside · England | 53.5162, -2.9412 | |
| Melling | Merseyside · England | 53.5134, -2.9382 | |
| Melling Mount | Merseyside · England | 53.51, -2.9375 | |
| Kirkby | Merseyside · England | 53.4833, -2.9 | |
| Liverpool | Merseyside · England | 53.4898, -2.8764 | |
| Knowsley | Merseyside · England | 53.454, -2.854 | |
| Prescot | Merseyside · England | 53.4295, -2.8003 | |
| Rainhill | Merseyside · England | 53.4037, -2.7476 | |
| Rainhill Stoops | Merseyside · England | 53.4118, -2.7683 | |
| Whiston | Merseyside · England | 53.42, -2.7891 | |
| Roby | Merseyside · England | 53.4091, -2.8567 | |
| Huyton | Merseyside · England | 53.4115, -2.8394 | |
| Formby | Merseyside · England | 53.5536, -3.0682 | |
| Freshfield | Merseyside · England | 53.5515, -3.0426 | |
| Great Altcar | Lancashire · England | 53.5494, -3.0171 | |
| Hightown | Merseyside · England | 53.5167, -3.05 | |
| Ince Blundell | Merseyside · England | 53.5243, -3.0273 | |
| Aughton | Lancashire · England | 53.5333, -2.9167 | |
| Aughton Park | Lancashire · England | 53.5556, -2.9094 | |
| Barrow Nook | Lancashire · England | 53.5556, -2.9094 | |
| Barton | Lancashire · England | 53.5667, -2.9667 | |
| Bickerstaffe | Lancashire · England | 53.5315, -2.8381 | |
| Downholland Cross | Lancashire · England | 53.5556, -2.9094 | |
| Halsall | Lancashire · England | 53.5853, -2.9532 | |
| Haskayne | Lancashire · England | 53.5556, -2.9094 | |
| Ormskirk | Lancashire · England | 53.5668, -2.8818 | |
| Town Green | Lancashire · England | 53.55, -2.9 |