Waltham Cross is a suburban dormitory town 12 miles North East of central London and located within the Greater London Urban Area and London Metropolitan Area. It is in the Borough of Broxbourne, immediately north of the London Borough of Enfield and is the most southeasterly town of Hertfordshire, located immediately north of the M25 motorway. The Waltham Cross post town additionally includes the neighbouring town of Cheshunt and a small part of Enfield.
The town falls within Hertfordshire's Borough of Broxbourne, the metropolitan area of London, and the Greater London Urban Area, with Waltham Abbey to the east, Cheshunt to the north, and Enfield to the south. The M25 motorway runs immediately south of the town, bordering the area of Freezywater. The Waltham Cross post town includes the neighbouring town of Cheshunt, some northern sections of Enfield, including the Holmesdale Estate. Waltham Cross is the most south easterly town within the county of Hertfordshire, and has fallen within its Borough of Broxbourne since 1974.
The area is served by two railway stations, on different lines in London fare zone 7. The main Waltham Cross railway station has services to south to London Liverpool Street and Stratford railway station via Tottenham Hale railway station with links to the Victoria line. To the north services run to Hertford East railway station or Bishops Stortford railway station.