It is located in the interior of the Catalan province of Gerona, of which it is the capital, in the northeast corner of the Iberian Peninsula. It belongs to the Gironés region and to the area of ​​the Girona counties and the urban system of Gerona, according to the General Territorial Plan of Catalonia.

The relief of the municipality is characterized by a plain where four rivers converge: Ter, Oñar, Güell and Galligans. However, in the areas farthest from the river plain, especially to the east, the relief is more mountainous, with heights such as the Montaña de los Ángeles, integrated into the Sierra de las Gavarras, already in the Precoastal Mountain Range. The altitude ranges between 395 meters (Sant Miquel peak) and 50 meters on the banks of the Ter river. The city rises 69 meters above sea level.