Aubigny-lès-Sombernon is located some 33 km west of Dijon and 12 km north-east of Créancey. Access to the commune is by road D905 (Route de Paris) from Sombernon in the east passing through the commune and the village and continuing north-west to Grosbois-en-Montagne. The A38 autoroute passes through the south of the commune with Exit 27 for Civry-en-Montagne in the south-west of the commune and Exit 27 in the south-east of the commune which accesses the village. The D16L road goes south-west from the village to join the D16 which follows the A38 south-west. The commune has a band of forest from west to east through the middle of the commune south of the village and a smaller band of forest to the north with the rest of the commune farmland.
The Brenne river flows through the commune and the village from the east and flows west into the Grosbois Reservoir west of the commune. The upper reach of the reservoir extends into the commune. The Ruisseau de Roussot flows from the south-east and joins the Brenne in the east of the commune.
In 2010 the commune had 140 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 towns 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, 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 on 1 January 2009 and was based on the census of 2006.