Stierva had a population (as of 2013) of 134.Swiss Federal Statistical Office accessed 15 January 2015 , 1.5% of the population was made up of foreign nationals. Over the last 10 years the population has decreased at a rate of -5.8%. Most of the population () speaks Rhaeto-Romance (66.4%), with German being second most common (32.8%) and Italian being third ( 0.8%).
