| AL1 |
St. Albans |
St Albans |
1,215 |
| AL2 |
St. Albans |
St Albans, Bricket Wood, Colney Street, Frogmore, London Colney, Napsbury, Park Street, Potters Crouch, Chiswell Green |
731 |
| AL3 |
St. Albans |
St Albans, Childwickbury, Flamstead, Gorhambury, Markyate, Porters Wood, Redbourn, Sandridge |
953 |
| AL4 |
St. Albans |
St Albans, Colney Heath, London Colney, Jersey Farm, Marshalswick, Oaklands, Sandridge, Smallford, Tyttenhanger, Wheathampstead |
782 |
| AL5 |
Harpenden |
Harpenden |
1,058 |
| AL6 |
Welwyn |
Welwyn, Ayot St Peter, Ayot St Lawrence, Digswell, Rabley Heath, Tewin |
507 |
| AL7 |
Welwyn, Welwyn Garden City |
Welwyn Garden City |
905 |
| AL8 |
Welwyn Garden City |
Welwyn Garden City, Lemsford |
425 |
| AL9 |
Hatfield |
Hatfield, Brookmans Park, Essendon, North Mymms |
429 |
| AL10 |
Hatfield |
Hatfield |
786 |
