The local economy was based mostly on grazing. During the summer, the cattle grazed in the high alpine pastures, in the winter the cows were moved to their winter pastures in the Magadino. Due to limited jobs, many of the residents emigrated and after about 1850, many went overseas. Decedents of residents of Sonogno can be found in nearly 40 different countries. The more recent exodus to urban centers, combined with emigration have caused a steady decline of population since the mid-nineteenth century. The Museum of Verzasca was built in Sonogno in 1974. In 2005 the agricultural sector still offered 47% of jobs in the municipality.