Urban Area Rank City Pop Rank City Country City Population Urban Area Population 4 3 Seoul South Korea 11153200 19844500 63 36 Pusan South Korea 4085300 4292900 111 73 Taegu South Korea 2543800 2976700 147 79 Incheon South Korea 2433000 2433000 226 163 Taejeon South Korea 1386800 1612900 258 167 Kwangju South Korea 1371000 1464000 386 251 Seongnam South Korea 1071200 1071200 344 314 Ulsan South Korea 870300 1137900 491 322 Pucheon South Korea 850000 850000 504 330 Suweon South Korea 824000 824000 634 443 Anyang South Korea 644700 644700 663 460 Cheonju South Korea 614200 614200 700 499 Cheongju South Korea 579500 579500 721 515 Koyang South Korea 565300 565300 731 528 Ansan South Korea 556600 556600 311 632 Changweon South Korea 486700 1253800 896 710 Pohang South Korea 435100 435100 910 730 Masan South Korea 421000 421000 961 809 Kwangmyeong South Korea 382700 382700 1164 1063 Euijeongbu South Korea 301100 301100 1205 1109 Chinju South Korea 290600 290600 1238 1146 Cheju South Korea 281900 281900 1267 1180 Kumi South Korea 271600 271600 1278 1193 Mokpo South Korea 269900 269900 1356 1280 Iksan South Korea 253200 253200 1404 1333 Cheonan South Korea 241800 241800 1476 1416 Kunsan South Korea 229900 229900 1518 1462 Pyeongtaek South Korea 223900 223900 1571 1520 Chuncheon South Korea 215200 215200 1683 1643 Weonju South Korea 201100 201100 1693 1653 Yeosu South Korea 200200 200200 1717 1679 Suncheon South Korea 196500 196500 1925 1896 Kangneung South Korea 173100 173100 2012 1986 Kyeongju South Korea 164700 164700 2061 2037 Chungju South Korea 160300 160300 2369 2353 Andong South Korea 137300 137300 2429 2414 Poryong South Korea 133700 133700 2746 2731 Chechon South Korea 116000 116000 3037 3023 Tongyong South Korea 104700 104700 3051 3037 Tonghae South Korea 104100 104100