what state or region is mannheim, germany located?
1 Mannheim is a city in Germany. 2  With 327,318 inhabitants it is the second-largest city in the state of Baden-Wuerttemberg wÃ¼rttemberg after the Capital. 3  Stuttgart mannheim is situated at the confluence of the Rivers rhine And, neckar in the northwestern corner of the state Of-Baden.  wuerttemberg wÃ¼rttemberg