Bassignac-le-Haut is located in the Massif Central some 20 km north-east of Argentat and 20 km south-east of Tulle. Access to the commune is by the D13 road from Darazac in the south which passes through the commune and the village before continuing north-east along the banks of the river then across to Saint-Merd-de-Lapleau. Apart from the village there are the hamlets of Le Bousquet, Vaujour, Le Mas, Vernac, Maurel, and Ymons in the commune. The commune is mostly farmland but heavily forested along the river.
A lake formed by the Barrage du Chastang dam on the Dordogne river forms all the western and northern border of the commune. The Ruisseau de vaujour rises in the north-west of the commune and flows the short distance north-west to the Dordogne. Similarly the Ruisseau du Roc Chabrier rises in the north and flows north into the Dordogne. The Ruisseau de la Cascade flows north through the eastern part of the commune to join the Dordogne east of the commune. The Ruisseau de Vieilzot rises just south of the commune and forms much of the southern border as it floes west to join the Dordogne in the south-western tip of the commune.
In 2010 the commune had 204 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.[Note 1]
^At the beginning of the 21st century, the methods of identification have been modified by Law No. 2002-276 of 27 February 2002, the so-called "law of local democracy" and in particular Title V "census operations" allows, after a transitional period running from 2004 to 2008, the annual publication of the legal population of the different French administrative districts. For communes with a population greater than 10,000 inhabitants, a sample survey is conducted annually and the entire territory of these communes is taken into account at the end of the period of five years. The first "legal population" after 1999 under this new law came into force in 1 January 2009 and was based on the census of 2006.