Gyeonggi-do has shown a rapid increase in population due to the modernization and urbanization of the Republic of Korea.
Excluding the two metropolitan cities (Seoul and Incheon), the most heavily populated area as of 2010 is Suwon (1,104,681) followed by Seongnam (996,524), Goyang (962,297), Yongin (891,708), Bucheon (890,875) and Ansan (753,862).