Austria uses a four-digit postal code system (Postleitzahl or PLZ) that was introduced in 1966. The codes are organized geographically, with the first digit generally indicating the region: 1 represents Vienna, 2 covers parts of Lower Austria and Burgenland, 3-4 represent other areas of Lower Austria, 5 covers Salzburg and parts of Upper Austria, 6 is for Tyrol and Vorarlberg, 7 covers Burgenland and parts of Styria, 8 represents most of Styria, and 9 covers Carinthia and East Tyrol. Vienna, as the capital, has a more detailed system where the second and third digits often correspond to the city's 23 districts, making it easy to identify specific neighborhoods. Larger cities like Graz, Linz, Salzburg, and Innsbruck typically have multiple postal codes to distinguish different areas within the city. The Austrian postal system is operated by Österreichische Post, and the postal codes are essential for efficient mail sorting and delivery throughout the country's diverse terrain, from urban centers to remote Alpine villages. There are currently 2,220 postal codes in Austria.