Hertfordshire is a ceremonial county in the East of England and one of the home counties. It borders Bedfordshire to the north-west, Cambridgeshire to the north-east, Essex to the east, Greater London to the south, and Buckinghamshire to the west. The largest settlement is Watford, and the county town is Hertford. The county has an area of 634 square miles and had a population of 1,198,800 at the 2021 census.