Crémenes is a municipality in the province of León, part of the autonomous community of Castile and León in northwestern Spain. It lies in the mountainous terrain of the Cantabrian Mountains region, near the upper reaches of the Esla river valley.
According to the 2010 census conducted by Spain's National Statistics Institute (INE), the municipality had a population of 660 inhabitants. Like many rural municipalities in this part of León, it is sparsely populated and covers a number of small settlements within its administrative boundaries.
The area is primarily known for its natural surroundings, with a landscape shaped by mountain ranges and river valleys typical of the Leonese portion of Castile and León.