Located on the doorstep of Seoul, it borders with Seocho-gu District of Seoul to the north, Seongnam City to the east, Uiwang City to the south, and Anyang City to the west.

As of the end of 2012, Gwacheon City’s total land area was 35.86km², accounting for 0.04% of the land area in Korea (100,214㎢) and 0.35% of Gyeonggi-do. The restricted development zone is 30.64㎢, which accounts for 85.5% of the Gwacheon's total area.