|• Total||1.718 km2 (0.663 sq mi)|
|• Density||6,800/km2 (18,000/sq mi)|
Since 1931, Belair has been the location of Luxembourg's national stadium, rebuilt in 1990, the Stade Josy Barthel, named after Luxembourg's only Olympic gold medal winner. In 2014, the Luxembourg government announced the construction of a new national stadium in Gasperich to replace the aging structure.
As of 31 December 2019[update], Belair has a population of 11,703 inhabitants.