What Are the Biggest Cities in Austria? Austria is known for its stunning mountains, charming towns, and world-class culture. But which cities are the biggest in terms of population and economic importance? Below is a quick overview of the top 10 biggest cities in Austria as of 2025. Top 10 Biggest Cities in Austria (By Population) City Population (2025 est.) Why It’s Notable Vienna 1,995,000+ Capital city, cultural hub, UN headquarters Graz 296,000+ University town, tech & arts center Linz 207,000+ Industrial hub on the Danube River Salzburg 156,000+ Birthplace of Mozart, baroque architecture Innsbruck 134,000+ Winter sports capital, Alpine…