Bures-sur-Yvette is located in the
Vallée de Chevreuse on the river
Yvette, along which the
RER B line is laid. The stations on the line serving the commune are
Bures-sur-Yvette and
La Hacquinière. Adjacent communes are
Orsay,
Gif-sur-Yvette,
Gometz-le-Châtel and
Les Ulis. The small town is also twinned with
Crewkerne, England. ==Demographics==