San Salvador is a department of El Salvador in the west central part of the country. The capital is San Salvador, which is also the national capital. The department has North of the Rio Lempa Valley, the "Valle de las Hamacas" (Hammock Valley) and a section of Lake Ilopango. Some of the cities that are densely populated are: San Salvador, Ciudad Delgado, Mejicanos, Soyapango, Panchimalco and Apopa.