SG1 — 11 codes dans 89 localités (Royaume-Uni).
| Code postal | Localité / Quartier | Zone administrative | Coordonnées |
|---|---|---|---|
| Stevenage | Hertfordshire · England | 51.9022, -0.2026 | |
| Hadham Cross | Hertfordshire · England | 51.8541, 0.0719 | |
| Much Hadham | Hertfordshire · England | 51.8541, 0.0719 | |
| Perry Green | Hertfordshire · England | 51.8541, 0.0719 | |
| Green Tye | Hertfordshire · England | 51.8541, 0.0719 | |
| Little Hadham | Hertfordshire · England | 51.8844, 0.0905 | |
| Standon | Hertfordshire · England | 51.8856, 0.0189 | |
| Puckeridge | Hertfordshire · England | 51.8912, 0.013 | |
| Patmore Heath | Hertfordshire · England | 51.894, 0.0461 | |
| Nasty | Hertfordshire · England | 51.894, 0.0461 | |
| High Cross | Hertfordshire · England | 51.894, 0.0461 | |
| Hay Street | Hertfordshire · England | 51.894, 0.0461 | |
| Haultwick | Hertfordshire · England | 51.894, 0.0461 | |
| Hadham Ford | Hertfordshire · England | 51.894, 0.0461 | |
| Collier's End | Hertfordshire · England | 51.894, 0.0461 | |
| Bury Green | Hertfordshire · England | 51.894, 0.0461 | |
| Braughing | Hertfordshire · England | 51.9068, 0.0279 | |
| Albury | Hertfordshire · England | 51.9018, 0.0803 | |
| Stanstead Abbots | Hertfordshire · England | 51.789, 0.012 | |
| Widford | Hertfordshire · England | 51.8232, 0.059 | |
| Wareside | Hertfordshire · England | 51.8203, -0.009 | |
| Ware | Hertfordshire · England | 51.8106, -0.0288 | |
| Wadesmill | Hertfordshire · England | 51.8392, -0.0318 | |
| Tonwell | Hertfordshire · England | 51.8203, -0.009 | |
| Thundridge | Hertfordshire · England | 51.8363, -0.0347 | |
| Green End | Hertfordshire · England | 51.8203, -0.009 | |
| St Margarets | Hertfordshire · England | 51.8203, -0.009 | |
| Hunsdon | Hertfordshire · England | 51.8043, 0.053 | |
| Great Amwell | Hertfordshire · England | 51.7901, -0.0167 | |
| Dane End | Hertfordshire · England | 51.8203, -0.009 | |
| Chapmore End | Hertfordshire · England | 51.8203, -0.009 | |
| Baker's End | Hertfordshire · England | 51.8203, -0.009 | |
| Sacombe | Hertfordshire · England | 51.8542, -0.0613 | |
| Little Amwell | Hertfordshire · England | 51.7833, -0.0333 | |
| Newgate Street | Hertfordshire · England | 51.7287, -0.1167 | |
| Little Berkhamsted | Hertfordshire · England | 51.7558, -0.1288 | |
| Epping Green | Hertfordshire · England | 51.7873, -0.0709 | |
| Hertford Heath | Hertfordshire · England | 51.7587, -0.0503 | |
| Hertford | Hertfordshire · England | 51.7959, -0.0785 | |
| Bayfordbury | Hertfordshire · England | 51.7587, -0.0503 | |
| Bayford | Hertfordshire · England | 51.7596, -0.102 | |
| Watton-at-Stone | Hertfordshire · England | 51.8584, -0.1138 | |
| Waterford | Hertfordshire · England | 51.8114, -0.1166 | |
| Stapleford | Hertfordshire · England | 51.8364, -0.1033 | |
| Letty Green | Hertfordshire · England | 51.7818, -0.137 | |
| Hertingfordbury | Hertfordshire · England | 51.7906, -0.1053 | |
| Bramfield | Hertfordshire · England | 51.8167, -0.1 | |
| Bengeo | Hertfordshire · England | 51.8114, -0.1166 | |
| Cole Green | Hertfordshire · England | 51.7875, -0.1438 | |
| Arlesey | Bedfordshire · England | 52.0071, -0.2656 | |
| Church End | Bedfordshire · England | 52.0134, -0.2637 | |
| Henlow | Bedfordshire · England | 52.0302, -0.286 | |
| Lower Stondon | Bedfordshire · England | 52.0302, -0.286 | |
| Upper Stondon | Bedfordshire · England | 52.0302, -0.286 | |
| Meppershall | Bedfordshire · England | 52.0171, -0.3399 | |
| Shefford | Bedfordshire · England | 52.0387, -0.334 | |
| Campton | Bedfordshire · England | 52.0458, -0.3639 | |
| Clifton | Bedfordshire · England | 52.0399, -0.3005 | |
| Chicksands | Bedfordshire · England | 52.0458, -0.3639 | |
| Upper Caldecote | Bedfordshire · England | 52.0822, -0.2667 | |
| Stanford | Bedfordshire · England | 52.0822, -0.2667 | |
| Northill | Bedfordshire · England | 52.1056, -0.323 | |
| Old Warden | Bedfordshire · England | 52.0818, -0.341 | |
| Southill | Bedfordshire · England | 52.0643, -0.3236 | |
| Langford | Bedfordshire · England | 52.0546, -0.2717 | |
| Edworth | Bedfordshire · England | 52.056, -0.2172 | |
| Dunton | Bedfordshire · England | 52.0831, -0.1975 | |
| Broom | Bedfordshire · England | 52.0822, -0.2667 | |
| Biggleswade | Bedfordshire · England | 52.0865, -0.2649 | |
| Ickwell Green | Bedfordshire · England | 52.0822, -0.2667 | |
| Hatley St George | Cambridgeshire · England | 52.1425, -0.1388 | |
| Waresley | Cambridgeshire · England | 52.1751, -0.1741 | |
| Thorncote Green | Bedfordshire · England | 52.1177, -0.1499 | |
| Tetworth | Bedfordshire · England | 52.1177, -0.1499 | |
| Tempsford | Bedfordshire · England | 52.1705, -0.2959 | |
| Sutton | Bedfordshire · England | 52.1133, -0.2217 | |
| Sandy | Bedfordshire · England | 52.1293, -0.2892 | |
| Potton | Bedfordshire · England | 52.1291, -0.2156 | |
| Little Gransden | Cambridgeshire · England | 52.1762, -0.1382 | |
| Girtford | Bedfordshire · England | 52.1177, -0.1499 | |
| Hatch | Bedfordshire · England | 52.1177, -0.1499 | |
| Great Gransden | Cambridgeshire · England | 52.1855, -0.1457 | |
| Gamlingay | Cambridgeshire · England | 52.1556, -0.193 | |
| Eyeworth | Bedfordshire · England | 52.0965, -0.1763 | |
| Everton | Bedfordshire · England | 52.1458, -0.2462 | |
| East Hatley | Cambridgeshire · England | 52.1397, -0.1187 | |
| Cockayne Hatley | Bedfordshire · England | 52.1321, -0.1651 | |
| Church End | Bedfordshire · England | 52.1399, -0.2393 | |
| Beeston | Bedfordshire · England | 52.1399, -0.2393 | |
| Wrestlingworth | Bedfordshire · England | 52.1104, -0.1634 |