Lorca is a municipality and city in the autonomous community of the Region of Murcia in south-eastern Spain, 58 kilometres southwest of …Lorca is a municipality and city in the autonomous community of the Region of Murcia in south-eastern Spain, 58 kilometres southwest of the city of Murcia. The municipality had a population of 95,515 in 2020, up from the 2001 census total of 77,477. Lorca has the second largest surface area of municipalities in Spain, 1,675.21 km, after Cáceres. The city is home to Lorca Castle and to a Collegiate church dedicated to St. Patrick.