Beaudean is located at the mouth of the Lesponne valley and the Campan valley in the inter-communal cooperative of Haute-Bigorre some 20 kmsouth by south-east of Tarbes and 5 km south of Bagnères-de-Bigorre. Access to the commune is by the D935 road from Pouzac in the north which passes through the eastern tip of the commune and the village and continues south-east to Campan. The D29 branches off the D935 in the commune and goes along the length of the commune south-west to end in Chiroulet. Apart from the village there is the hamlet of Serris. The commune is mixed forest and farmland in the north and rugged forested mountains in the south. The Adour river forms the north-eastern border of the commune as it flows north-west eventually joining the Atlantic ocean at Boucau. The Adour de Lesponne flows from the south-west of the commune, forming much of the western border as it flows north-east, gathering tributaries such as the Ruisseau du Brouilh, the Ruisseau de Narbios, the Hourquet, and the Ruisseau de Hount Hérède, to join the Adour at the eastern corner of the commune. The Serrisriver flows north-east through the commune and the village to join the Adour. The Ruisseau de Binaros forms most of the eastern border of the commune as it flows north to join the Adour de Lesponne in the narrow "neck" of the commune.
Beaudéan appears as Beaudean on the 1750 Cassini Map and the same on the 1790 version. Beaudéan comes from the name of a domain. The Germanic personal nameBald-win with the suffix -anum.
Beaudéan falls within the area of the Tribunal d'instance of Tarbes, the Tribunal de grande instance of Tarbes, the Cour d'appelCourt of Appeal of Pau, the Tribunal pour enfants of Tarbes, the Conseil de prud'hommes of Tarbes, the Tribunal de commerce of Tarbes, the Tribunal administratif of Pau, and the Cour administrative d'appel of Bordeaux
Demography
In 2012 the commune had 391 inhabitants. The evolution of the number of inhabitants is known from the population censuses conducted in the commune since 1793. From the 21st century, a census of communes with fewer than 10,000 inhabitants is held every five years, unlike larger communes that have a sample survey every year.
The Church of Saint Martin is registered as an historical monument. is It is characterized by a bell tower with four corbelled turrets. The Church contains several items that are registered as historical objects:
