Soulce had a population () of 233.Swiss Federal Statistics Office – STAT-TAB Ständige und Nichtständige Wohnbevölkerung nach Region, Geschlecht, Nationalität und Alter accessed 3 October 2012 , 3.6% of the population are resident foreign nationals.Swiss Federal Statistical Office - Superweb database - Gemeinde Statistics 1981-2008 accessed 19 June 2010 Over the last 10 years (2000–2010) the population has changed at a rate of 5.3%. Migration accounted for 3.7%, while births and deaths accounted for 4.9%.Swiss Federal Statistical Office accessed 22-December-2011
