| postal codes | City | County | latitude | longitude | Map |
|---|---|---|---|---|---|
| GY1 | St Peter Port | Guernsey Channel Islands | 49.45 | -2.6 | Google Maps |
| GY10 | Sark | Channel Islands | 49.71 | -2.2 | Google Maps |
| GY2 | Delancey | Guernsey Channel Islands | 49.45 | -2.6 | Google Maps |
| GY2 | St Sampsons | Guernsey Channel Islands | 49.45 | -2.6 | Google Maps |
| GY3 | Vale | Guernsey Channel Islands | 49.45 | -2.6 | Google Maps |
| GY4 | St Martin | Guernsey Channel Islands | 49.45 | -2.6 | Google Maps |
| GY5 | Castel | Guernsey Channel Islands | 49.45 | -2.6 | Google Maps |
| GY9 | Alderney | Channel Islands | 49.71 | -2.2 | Google Maps |