勒布瓦
, the population was 50.2% male and 49.8% female. The population was made up of 519 Swiss men (44.9% of the population) and 61 (5.3%) non-Swiss men. There were 524 Swiss women (45.4%) and 51 (4.4%) non-Swiss women. Of the population in the municipality, 466 or about 45.3% were born in Les Bois and lived there in 2000. There were 128 or 12.4% who were born in the same canton, while 287 or 27.9% were born somewhere else in Switzerland, and 109 or 10.6% were born outside of Switzerland.