Køge is a seaport on the coast of Køge Bugt (Bay of Køge) 39 km southwest of Copenhagen. It is the principal town and seat of Køge Municipality, Region Sjælland, Denmark. The natural harbour and strategic location have given Køge a long history as a market town. Today, that past is witnessed by a well-preserved old town centre with many half-timbered houses.
Køge is in the Copenhagen metropolitan area and is connected to downtown Copenhagen by the E line of the S-train commuter rail system. Køge is also on a new rail line under construction between Copenhagen and Ringsted, and due for completion in 2018. The new line will make Køge a central hub in Denmark's transport system