Arcenillas is a municipality in Spain, located in the province of Zamora within the autonomous community of Castile and León. It lies in the northwestern part of the country, in a region characterized by a continental Mediterranean climate and a landscape of rolling plains and farmland.
According to the 2004 census conducted by the Instituto Nacional de Estadística (INE), the municipality had a population of 309 inhabitants. Like many small municipalities in rural Castile and León, Arcenillas is a sparsely populated community where agriculture and local traditions form the backbone of daily life.
The town is part of the broader cultural and historical heritage of the Zamora province, an area known for its Romanesque architecture, medieval villages, and proximity to the Duero River basin. Its small size and rural setting make it representative of the many quiet, close-knit communities that dot the Castilian countryside.