| City | Region | Country | Time Zone | Population | |
|---|---|---|---|---|---|
| Jeju City | Jeju-do | South Korea | Korean Standard Time | 486,306 | |
| Uijeongbu-si | Gyeonggi-do | South Korea | Korean Standard Time | 479,141 | |
| Masan | Gwangju | South Korea | Korean Standard Time | 434,371 | |
| Gumi | Gyeongsangbuk-do | South Korea | Korean Standard Time | 427,770 | |
| Pyeongtaek | Gyeonggi-do | South Korea | Korean Standard Time | 364,694 | |
| Gwangmyeong | Gyeonggi-do | South Korea | Korean Standard Time | 357,545 | |
| Sejong | Sejong-si | South Korea | Korean Standard Time | 351,007 | |
| Yangsan | Gyeongsangnam-do | South Korea | Korean Standard Time | 342,371 | |
| Wonju | Gangwon-do | South Korea | Korean Standard Time | 332,849 | |
| Chinju | Gyeongsangnam-do | South Korea | Korean Standard Time | 307,242 | |
| Iksan | Jeollabuk-do | South Korea | Korean Standard Time | 307,000 | |
| Yeosu | Jeollanam-do | South Korea | Korean Standard Time | 295,538 | |
| Gunpo | Gyeonggi-do | South Korea | Korean Standard Time | 286,485 | |
| Mokpo | Jeollanam-do | South Korea | Korean Standard Time | 268,402 | |
| Hanam | Gyeonggi-do | South Korea | Korean Standard Time | 254,415 | |
| Gunsan | Jeollabuk-do | South Korea | Korean Standard Time | 243,406 | |
| Suncheon | Jeollanam-do | South Korea | Korean Standard Time | 230,796 | |
| Chuncheon | Gangwon-do | South Korea | Korean Standard Time | 209,746 | |
| Chungju | North Chungcheong | South Korea | Korean Standard Time | 209,483 | |
| Icheon-si | Gyeonggi-do | South Korea | Korean Standard Time | 196,230 |
