Hemel Hempstead is a town in the Dacorum district in Hertfordshire, England. It is located 24 miles north-west of London; nearby towns in…Hemel Hempstead is a town in the Dacorum district in Hertfordshire, England. It is located 24 miles north-west of London; nearby towns include Watford, St Albans and Berkhamsted. The population at the 2021 census was 95,961.