Until the last third of the 19th century, Jettenbach's economic development was negligible. Small improvements came after the Franco-Prussian War partly due to the "Wandermusikanten". This saw whole orchestras from Jettenbach seeking their livelihood elsewhere by performing across of Europe and other parts of the world. Their added buying power and consequent upsurge in building activity was primarily responsible for an improved economic outlook. Whole rows of buildings went up and village life was reinvigorated. By the turn of the 20th century, Jettenbach had over one thousand inhabitants.