The inhabitants of the commune are known as Bélestais and Bélestaises.
Astronomical observatory
A group of amateur astronomers formed the Association pour le Développement Amateur d’un Grand Instrument d’Observation (ADAGIO), which established the Bélesta Observatory in 1996. In 2019, the association donated the land from the Bélesta Observatory to the Société astronomique de France, with ADAGIO remaining the owner and operator of the telescopes.[3]