Abstract: Provided herein may be a memory controller and a memory system including the same. The memory controller may include a plurality of control cores configured to control a plurality of zone blocks respectively corresponding to logical address groups provided by a host, a buffer memory configured to store information about a zone group including zone blocks which are controlled by different control cores among the plurality of zone blocks, the information about zone group being generated based on information about an available space in each of the plurality of zone blocks, and a wear-leveling controller configured to control the plurality of control cores to perform a global wear-leveling operation of swapping pieces of data between the zone blocks included in the zone group based on a wear-level of the plurality of zone blocks.