Orsières has a population () of . , 11.5% of the population are resident foreign nationals. Over the last 10 years (1999–2009) the population has changed at a rate of 6.9%. It has changed at a rate of 6.5% due to migration and at a rate of 2.9% due to births and deaths. Most of the population () speaks
French (2,531 or 96.2%) as their first language,
German is the second most common (37 or 1.4%) and
Portuguese is the third (14 or 0.5%). There are 8 people who speak
Italian. Of the population in the municipality 1,784 or about 67.8% were born in Orsières and lived there in 2000. There were 361 or 13.7% who were born in the same canton, while 210 or 8.0% were born somewhere else in Switzerland, and 205 or 7.8% were born outside of Switzerland. , there were 990 private households in the municipality, and an average of 2.6 persons per household. , a total of 951 apartments (44.7% of the total) were permanently occupied, while 1,025 apartments (48.2%) were seasonally occupied and 152 apartments (7.1%) were empty. , the construction rate of new housing units was 0.7 new units per 1000 residents. The vacancy rate for the municipality, , was 0.3%. == Notable people ==