Royan Commune Coat of arms Royan Location within Nouvelle-Aquitaine region Royan Coordinates: 45°37′N 1°02′W﻿ / ﻿45.62°N 1.03°W﻿ / 45.62; -1.03Coordinates: 45°37′N 1°02′W﻿ / ﻿45.62°N 1.03°W﻿ / 45.62; -1.03 Country France Region Nouvelle-Aquitaine Department Charente-Maritime Arrondissement Rochefort Canton Royan Intercommunality Communauté d'agglomération Royan Atlantique Government • Mayor (2017–2020) Patrick Marengo Area1 19.30 km2 (7.45 sq mi) Population (2015)2 18,393 • Density 950/km2 (2,500/sq mi) Time zone CET (UTC+1) • Summer (DST) CEST (UTC+2) INSEE/Postal code 17306 /17200 Elevation 0–35 m (0–115 ft) (avg. 20 m or 66 ft) 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. 2 Population without double counting: residents of multiple communes (e.g., students and military personnel) only counted once.