Calasparra has an area of 193 km² and a population of 9,700 (2004). Between 2004 and 2006 more than 2,000 British immigrants bought new homes off-plan, built on 3 new urbanisations surrounding the town, with more purchasing country homes.
Calasparra is situated in a mountainous region (400m) in the northwest of the province of Murcia. In contrast to the surrounding arid terrain, Calasparra benefits from being crossed by four rivers, including the Segura. This has enabled the cultivation of Calasparra rice, for which the town is noted, and dates back to the 14th century. The population is predominantly Spanish, but other nationalities can be found here, particularly Moroccans and English.