Graz is the capital of Styria and the second-largest city in Austria, after Vienna. As of 1 January 2024, Graz had a population of 339,810. In …Graz is the capital of Styria and the second-largest city in Austria, after Vienna. As of 1 January 2024, Graz had a population of 339,810. In 2021, the population of the Graz larger urban zone stood at 665,390 based on principal-residence status. Graz is known as a college and university city, with four colleges and four universities. Combined, the city is home to more than 60,000 students. Its historic centre is one of the best-preserved city centres in Central Europe.