Austria Capital and Main Cities

Vienna is the capital city of Austria with some 1.55 million residents.
Vienna is divided into 23 districts that are not known by name but by the numbers 1 - 23, similar to Paris and Prague.
The other main cities in descending order are:
Graz approximately 223,000
Linz approximately 181,000
Salzburg approximately 143,000
Innsbruck approximately 113,000
Wels approximately 58,000
Dornbirn approximately 43,000