, the population was 49.2% male and 50.8% female. The population was made up of 311 Swiss men (45.5% of the population) and 25 (3.7%) non-Swiss men. There were 324 Swiss women (47.4%) and 23 (3.4%) non-Swiss women. Of the population in the municipality, 326 or about 53.8% were born in Lajoux and lived there in 2000. There were 99 or 16.3% who were born in the same canton, while 112 or 18.5% were born somewhere else in Switzerland, and 46 or 7.6% were born outside of Switzerland.