Wels is a city in Upper Austria, on the Traun River near Linz. It is the county seat of Wels-Land, and with a population of approximately 60,…Wels is a city in Upper Austria, on the Traun River near Linz. It is the county seat of Wels-Land, and with a population of approximately 60,000, the eighth largest city in Austria. Wels is in the Hausruckviertel at an elevation of 317 metres. From north to south, it extends over 9.5 kilometres, from west to east over 9.6 kilometres. 3.4% of the area is covered with forest, 23.5% is used for agriculture.