Borex is a municipality in the district of Nyon in the canton of Vaud in Switzerland. Borex is first mentioned in 1213 as Borrai. Borex has a…Borex is a municipality in the district of Nyon in the canton of Vaud in Switzerland. Borex is first mentioned in 1213 as Borrai. Borex has an area, as of 2009, of 2 square kilometers. Of this area, 1.51 km² or 76.3% is used for agricultural purposes, while 0.03 km² or 1.5% is forested. Of the rest of the land, 0.41 km² or 20.7% is settled.