Carmena is a municipality in the province of Toledo, within the autonomous community of Castile-La Mancha, Spain. It is located in the central part of the country, in the region historically known as Castile.
The municipality is small, with a population recorded as 860 inhabitants in the 2006 census conducted by Spain's National Statistics Institute (INE). Like many rural municipalities in the province of Toledo, it is characterized by a modest population size and a setting within the broader Castilian landscape.
Carmena is one of numerous municipalities that make up the province of Toledo, a province whose administrative center is the city of Toledo. The municipality's official population figures are tracked by the INE, Spain's national statistical authority.