CR8: 53 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in CR8, CR8 1HA, stands 53 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, CR8 5EG, stands 159 m above it.
- Ground at eight in ten of its postcodes: between 65 m and 134 m, measured from Ordnance Datum; the middle one stands at 96 m.
- None lies in the Environment Agency's Flood Zone 3 from the sea.
- Mostly in Croydon; partly in Sutton.