List of cities in South Korea by population. There are 137 cities in South Korea, of which Seoul is the largest in terms of population - 10 063 254. The total number of people in South Korea is 51 780 609 for 2026.
| # | Name, city | Population |
|---|---|---|
| 1 | Seoul | 10 063 254 |
| 2 | Busan | 3 393 288 |
| 3 | Incheon | 2 632 068 |
| 4 | Daegu | 2 431 834 |
| 5 | Daejeon | 1 490 220 |
| 6 | Gwangju | 1 466 203 |
| 7 | Ulsan | 1 071 745 |
| 8 | Suwon | 1 054 142 |
| 9 | Changwon | 1 047 504 |
| 10 | Seongnam | 936 358 |
| 11 | Goyang | 897 257 |
| 12 | Yongin | 847 211 |
| 13 | Bucheon | 842 580 |
| 14 | Ansan | 699 129 |
| 15 | Cheongju | 662 183 |
| 16 | Jeonju | 646 572 |
| 17 | Anyang | 596 871 |
| 18 | Cheonan | 565 290 |
| 19 | Namyangju | 526 704 |
| 20 | Pohang | 508 752 |
| 21 | Gimhae | 484 338 |
| 22 | Hwaseong | 474 215 |
| 23 | Uijeongbu | 415 239 |
| 24 | Kumi | 399 033 |
| 25 | Jeju | 398 776 |
| 26 | Siheung | 393 369 |
| 27 | Pyeongtaek | 381 818 |
| 28 | Chinju | 335 397 |
| 29 | Gwangmyeong | 326 451 |
| 30 | Paju | 323 985 |
| 31 | Wonju | 309 860 |
| 32 | Iksan | 294 561 |
| 33 | Chuncheon | 274 267 |
| 34 | Gunpo | 274 256 |
| 35 | Asanas | 272 311 |
| 36 | Yeosu | 268 770 |
| 37 | Gyeongsang | 260 736 |
| 38 | Gunsan | 258 873 |
| 39 | Suncheon | 257 829 |
| 40 | Gyeongju | 252 774 |
| 41 | Yangsan | 249 566 |
| 42 | Mokpo | 248 741 |
| 43 | Kyosai | 225 097 |
| 44 | Gwangju | 224 353 |
| 45 | Gangneung | 217 498 |
| 46 | Gimpo | 217 316 |
| 47 | Chungju | 201 413 |
| 48 | Icheon | 192 973 |
| 49 | Khoury | 184 527 |
| 50 | Yangju | 183 734 |
| 51 | Osan | 181 012 |
| 52 | Anson | 175 891 |
| 53 | Jinhae | 171 441 |
| 54 | Andong | 165 444 |
| 55 | Seosan | 155 173 |
| 56 | Dangjin | 149 482 |
| 57 | Uiwang | 143 428 |
| 58 | Khans | 137 634 |
| 59 | Gwangyang | 137 195 |
| 60 | Pocheon | 136 626 |
| 61 | Chechen | 133 719 |
| 62 | Seogwipo | 129 807 |
| 63 | Tongyeong | 127 938 |
| 64 | Gimcheon | 126 851 |
| 65 | Kongju | 120 674 |
| 66 | Nonsan | 117 702 |
| 67 | Jeongeup | 109 509 |
| 68 | Yeongju | 108 313 |
| 69 | Sacheon | 106 228 |
| 70 | Laity | 98 594 |
| 71 | Sanju | 97 591 |
| 72 | Boryeong | 97 127 |
| 73 | Yeongcheon | 94 373 |
| 74 | Dongducheon | 90 504 |
| 75 | Donghae | 90 409 |
| 76 | Gimje | 82 785 |
| 77 | Sokcho | 80 587 |
| 78 | Namwon | 78 517 |
| 79 | Naju | 77 876 |
| 80 | Mungyeong | 68 743 |
| 81 | Samcheok | 67 143 |
| 82 | Gwacheon | 66 385 |
| 83 | Taebaek | 51 458 |
| 84 | Keren | 41 433 |