San Carlos is a city in the Maldonado Department of southern Uruguay. It is located on Route 39, 2 kilometres (1.2 mi) south of its intersection with Route 9 and about 13.5 kilometres (8.4 mi) north of the center of the department capital city of Maldonado. Its status was elevated to "City" category on 18 December 1929 by decree Ley No. 8.559. The stream Arroyo San Carlos flows along the east limits of the city and the (park) Parque San Carlos is situated across it.