Leipzig (ˈlaɪpsɪɡ,_-sɪx , ˈlaɪptsɪç; Upper Saxon: Leibz'sch) is the most populous city in the German state of Saxony. Leipzig's population of 624,689 inhabitants (1.1 million in the larger urban zone) as of 2022 places the city as Germany's eighth most populous, as well as the second most populous city in the area of the former East Germany after (East) Berlin. Together with Halle (Saale), the city forms the polycentric Leipzig-Halle Conurbation. Between the two cities (in Schkeuditz) lies Leipzig/Halle Airport.
Leipzig is located about southwest of Berlin, in the southernmost part of the North German Plain (the Leipzig Bay), at the confluence of the White Elster and its tributaries Pleiße and Parthe, that form an extensive inland delta in the city known as "Leipziger Gewässerknoten" (de), along which Europe's largest intra-city alluvial forest has developed. The city is surrounded by the Leipziger Neuseenland (Leipzig New Lakeland), a lake district consisting of several artificial lakes created from former lignite opencast mines. The name of the city and those of many of its boroughs are of Slavic origin.
Leipzig has been a trade city since at least the time of the Holy Roman Empire. The city sits at the intersection of the Via Regia and the Via Imperii, two important medieval trade routes. Leipzig's trade fair dates back to 1190. Between 1764 and 1945, the city was a center of publishing. After the Second World War and during the period of the German Democratic Republic (East Germany) Leipzig remained a major urban centre in East Germany, but its cultural and economic importance declined.
Events in Leipzig in 1989 played a significant role in precipitating the fall of communism in Central and Eastern Europe, mainly through demonstrations starting from St. Nicholas Church. The immediate effects of the reunification of Germany included the collapse of the local economy (which had come to depend on highly polluting heavy industry), severe unemployment, and urban blight. Starting around 2000, however, the decline began to be reversed.