 Originally positioned on Old Watford Road around The Three Hammers public house, Chiswell Green was much extended between the wars and shortly afterwards.It now is a medium-sized suburb.Nearby places outside the district include Hatfield to the east, Welwyn Garden City to the northeast, Luton and Dunstable to the northwest, Hemel Hempstead to the west, Watford to the southwest and Borehamwood to the south.