A farming village situated by the banks of the river Saâne in the Pays de Caux, some 9 miles (14 km) southwest of Dieppe on the D 27 and the D 925 at its junction with the D 127 road.
Coat of arms
The arms of Longueil are blazoned : tierced per fess 1: Or, 2 roses gules; 2: Gules, a crescent between 2 mullets argent; 3: Azure, a rose argent.