E5: 0.6 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in E5, E5 0BD, stands 0.6 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, E5 9AF, stands 27 m above it.
- Ground at eight in ten of its postcodes: between 7.1 m and 28 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 Hackney; partly in Waltham Forest.