KT5: 5.5 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in KT5, KT5 8WP, stands 5.5 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, KT5 8SE, stands 30 m above it.
- Ground at eight in ten of its postcodes: between 19 m and 34 m, measured from Ordnance Datum; the middle one stands at 26 m.
- None lies in the Environment Agency's Flood Zone 3 from the sea.
- In Kingston upon Thames.