Hertfordshire, este format din 10 districte si 24 de orase, comitatul Hertfordshire avea o populatie de 1,140,700 locuitori in anul 2013.

1. Three Rivers
2. Watford
3. Hertsmere
4. Welwyn Hatfield
5. Broxbourne
6. East Hertfordshire
7. Stevenage
8. North Hertfordshire
9. St Albans
10. Dacorum

1. Berkhamsted
2. Bishop’s Stortford
3. Borehamwood
4. Broxbourne
5. Bushey
6. Cheshunt
7. Harpenden
8. Hatfield
9. Hemel Hempstead
10. Hertford
11. Hitchin
12. Hoddesdon
13. Letchworth Garden City
14. Potters Bar
15. Rickmansworth
16. Royston
17. St Albans
18. Sawbridgeworth
19. Stevenage
20. Tring
21. Waltham Cross
22. Ware
23. Watford
24. Welwyn Garden City