WC2A: 7.9 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in WC2A, WC2A 2LL, stands 7.9 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, WC2A 3HP, stands 18 m above it.
- Ground at eight in ten of its postcodes: between 17 m and 22 m, measured from Ordnance Datum; the middle one stands at 19 m.
- None lies in the Environment Agency's Flood Zone 3 from the sea.
- Mostly in Camden; partly in Westminster.