La Seu d'Urgell (, ; , formerly in ) is a town located in the
Catalan Pyrenees in
Spain. La Seu d'Urgell is also the capital of the
comarca Alt Urgell, head of the judicial district of la Seu d'Urgell and the seat of
Bishop of Urgell, one of the
Andorra co-princes. It is in the district of
Alt Pirineu i Aran (
High Pyrenees and Aran), and is the town with the most inhabitants, having 17.4% of the district population. La Seu d'Urgell and
Puigcerdà together have 30% of the population of the area.