Castellciutat (Catalan pronunciation: [kəsˌteʎsiwˈtat], locally: [kasˌteʎsiwˈtat]) is a village in the municipality of la Seu d'Urgell (Alt Urgell, Catalonia). In the past it was called Ciutat (City in English) but is now called either Ciutat or Castellciutat. It has a population of 451 inhabitants.