A farming and light industrial town situated some 11 miles (18 km) west of the centre of Rouen at the junction of the D43, D5 and the D982 roads.
The Austreberthe River joins the Seine at Duclair, which is linked by ferry to the south bank. SNCF operates a TER service, having a railway station in the town.
A breed of duck is named after the town; the canard Duclair is black with a white bib.
The arms of Duclair are blazoned : Per fess 1: per pale I: Azure, a duck volant contourny both wings pointing down argent; II: Or, an apple tree fructed proper on a base vert; 2: Azure, 3 fish contourny argent.