Malmköping is located about 15 kilometers north of the municipal seat Flen. It is a tourist attraction due to its two annual markets. The traditions of markets in Malmköping goes back more than two centuries, as Malmköping got market town rights (köping) in 1785.
There is also a museum tramway in Malmköping, running heritage trams from most of the Swedish tramway systems. Olympian Helge Meuller was born here.