NW8: 24 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in NW8, NW8 0FB, stands 24 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, NW8 6NN, stands 48 m above it.
- Ground at eight in ten of its postcodes: between 34 m and 48 m, measured from Ordnance Datum; the middle one stands at 39 m.
- None lies in the Environment Agency's Flood Zone 3 from the sea.
- Mostly in Westminster; partly in Camden.