Wals-Siezenheim is a municipality in the district of Salzburg-Umgebung in the Austrian state of Salzburg. The double municipality had been fou…Wals-Siezenheim is a municipality in the district of Salzburg-Umgebung in the Austrian state of Salzburg. The double municipality had been founded in 1948 of the places Wals and Siezenheim. In the same year the arm had been conferred. The population figure rose up from 1,000 inhabitants in 1947 to approximately 11,000 in 2001. Previous Wals was part of the separate municipality Siezenheim, but even so Liefering and a giant part of Taxach.