Claim: There are 11 areas  that comprise the List of Parliamentary constituencies in Hertfordshire.
Evidence: Nine are designated as county constituencies (in which candidates can spend more per head than their borough counterparts). Two are borough constituencies. 
Broxbourne Hemel Hempstead Hertford and Stortford Hertsmere Hitchin and Harpenden North East Hertfordshire South West Hertfordshire St Albans Stevenage Watford Welwyn Hatfield