 The Lumansonesque is fed by the "Barbade" with its numerous tributaries which forms part of the western border before flowing across the commune and joining the Lumansonesque.List of Successive Mayors of Aguessac

(Not all data is known)

The gender and age of the population of the Aguessac commune in 2009 and, comparatively, that of the department of Aveyron in the same year are represented in the following table.The population of the commune was 53.6% men and 46.4% women in 2009.