Düsseldorf is the capital of North Rhine-Westphalia since 1946 and has 575.000 inhabitants. In 1135 it was mentioned for the first time as "Düsseldorp" and became city in 1235 under Adolf von Berg. Phone: 0211 Postal Code: 40??? Deutschsprachige Einträge befinden sich unter World: Deutsch: Regional: Deutschland: Nordrhein-Westfalen: Städte und Gemeinden: D: Düsseldorf