, the population was 52.1% male and 47.9% female. The population was made up of 275 Swiss men (49.1% of the population) and 17 (3.0%) non-Swiss men. There were 254 Swiss women (45.4%) and 14 (2.5%) non-Swiss women. Of the population in the municipality, 170 or about 33.9% were born in Rossemaison and lived there in 2000. There were 188 or 37.5% who were born in the same canton, while 79 or 15.8% were born somewhere else in Switzerland, and 52 or 10.4% were born outside of Switzerland.