CR2: 36 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in CR2, CR2 0ZA, stands 36 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, CR2 8RH, stands 168 m above it.
- Ground at eight in ten of its postcodes: between 55 m and 154 m, measured from Ordnance Datum; the middle one stands at 101 m.
- None lies in the Environment Agency's Flood Zone 3 from the sea.
- In Croydon.