Castell d'Aro, Platja d'Aro i s'Agaró is a municipality in Spain, in the province of Girona, in Catalonia. On 1 January 2025 it had 12,982 inhabitants according to the INE municipal register (padrón), over an area of about 22.7 km².
Density, at about 572 inhabitants per km², is that of a populous urban area, with residential districts, services and businesses. Of the 35 municipalities in the province of Girona with at least 5,000 inhabitants, it is number 13 by population.
As the crow flies it lies about 25 km south-east of Girona, the provincial capital. The nearest major city is Barcelona, about 90 km away.
Nearby, within a few dozen kilometres, are other destinations featured in our guides: Calella de Palafrugell (14 km), Tossa de Mar (15 km), Lloret de Mar (21 km), Púbol (22 km), Girona (26 km).
To explore the area, use the map of neighbouring municipalities and the accommodation options in and around Castell d'Aro, Platja d'Aro i s'Agaró; all the municipalities in the province of Girona are listed on their own page.