Letty Green lies south of Cole Green. To the east of Letty Green is the settlement of Pipers End.
To the north of Letty Green is the Cole Green Way – the former railway line from Hertford to Luton via Welwyn Garden City. The railway was closed in the 1960’s and now forms a cycle way and bridle path.
As shown in the map above, Letty Green includes an area of grass designated as a Village Green: Letty Green.
Letty Green is also the name of the road that leads from the junction of Station Road, Chapel Lane and Woolmers Lane to the B158.
To the south of Letty Green is the Hertfordshire Polo Club and Rochfords nursery.