Full Name Strasbourg Area 78 sq km 30 sq miles Population 427,000 Time Zone GMT/UTC +1 () Languages French (official) French is the official language and spoken by everyone; regionally however you will come across Flemish, Alsacian, Breton, Basque, Catalan, Provençal and Corsican as well. Catalan (other) Basque (other) Breton (other) Corsican (other) Currency Euro (€)