Hitzacker is a town in the Lüchow-Dannenberg district of Lower Saxony, Germany. It is situated on the river Elbe, approx. 8 km north of Dannenberg, and 45 km east of Lüneburg. The 2007 population of Hitzacker was 4,982, and its postal code is 29456. The mayor is Karl Guhl. The town is located on the German Timber-Frame Road and is part of the Samtgemeinde ("collective municipality") of Elbtalaue. The famous library now in Wolfenbüttel was founded here by Augustus the Younger, Duke of Brunswick-Lüneburg (who died in 1666) and was moved to its present location in 1643.