Towns and cities
Borehamwood (50)Bushey (47)Watford (42)Rickmansworth (40)Cheshunt (37)Potters Bar (37)Radlett (37)Waltham Cross (37)Chorleywood (33)Hatfield (26)Hoddesdon (25)Hertford (23)Welwyn Garden City (21)Hemel Hempstead (21)Ware (20)St Albans (18)Harpenden (17)Tring (16)Berkhamsted (14)Sawbridgeworth (10)Bishop's Stortford (9)Stevenage (8)Hitchin (6)Baldock (5)Letchworth (5)Buntingford (4)