Saint-Floris (West Flemish: Sint-Floris) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France[3] about 9 miles (14 km) north of Béthune and 30 miles (48 km) west of Lille.

The canalized river Lys flows through the commune, forming part of the border with the department of Nord.

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