South Korea is an Asian republic located in the southern part of the Korean Peninsula on an area of 100 thousand square kilometers, and inhabited by 51 million people distributed over a group of cities, including some of the largest cities in the world.
The largest city in South Korea
Seoul, or Seoul, is the capital and largest city in South Korea, and the fourth largest in the world after Tokyo, New York and Los Angeles.
The city has a population of 10 million.
Despite the good economy of the city, its population is growing at a very slow pace, and many of its residents are moving to other cities to live due to the high cost of living and overcrowding.
Busan

Busan is located in the far southeast of the Korean Peninsula, and is the economic, cultural and educational center in the southeast of the country, and its port is the busiest in South Korea, and the sixth in the world.
The city covers an area of 4,400 square kilometers, and is divided into 16 administrative districts and one district.
It has a population of 3.6 million, and the population of the metropolitan area is about 8 million.
Incheon

A city located in the northwest of South Korea, it is the third largest city in Japan
With a population of 2.8 million, Morocco is part of the Seoul metropolitan area which is the fourth largest metropolitan area in the world.
The city’s strategic location on the coast makes it a major hub for domestic and international transportation in South Korea, and the city’s airport is the country’s main international airport, serving more than 49 million passengers per year.
The 20 largest cities in South Korea
This list includes provincial-level divisions: special city (특별시/特別市) and metropolitan cities (광역시/廣域市), and municipal-level division: cities (시/市). Other municipal-level divisions: counties (군/郡 which have populations under 50K) and districts (구/區) are not included. All population data are based on the South Korean population and housing census 2000–2020.[1]
Rank Division 2020 2015 2010 2005 2000 1 Seoul (Special city) 9,586,195 9,904,312 9,631,482 9,762,546 9,853,972 2 Busan (Metropolitan city) 3,349,016 3,448,737 3,393,191 3,512,547 3,655,437 3 Incheon (Metropolitan city) 2,945,454 2,890,451 2,632,035 2,517,680 2,466,338 4 Daegu (Metropolitan city) 2,410,700 2,466,052 2,431,774 2,456,016 2,473,990 5 Daejeon (Metropolitan city) 1,488,435 1,538,394 1,490,158 1,438,551 1,365,961 6 Gwangju (Metropolitan city) 1,477,573 1,502,881 1,466,143 1,413,644 1,350,948 7 Suwon Gyeonggi 1,210,150 1,194,313 1,054,053 1,039,233 944,239 8 Ulsan (Metropolitan city) 1,135,423 1,166,615 1,071,673 1,044,934 1,012,110 9 Yongin Gyeonggi 1,066,975 971,327 847,138 686,842 384,741 10 Goyang Gyeonggi 1,045,497 990,073 897,222 864,402 762,598 11 Changwon[2] South Gyeongsang 1,029,389 1,059,241 1,047,488 1,075,326 1,076,448 12 Seongnam Gyeonggi 922,025 948,757 936,267 931,019 912,222 13 Hwaseong[3] Gyeonggi 880,859 608,725 474,160 282,124 185,979 14 Cheongju[4] North Chungcheong 855,326 833,276 804,119 752,768 701,256 15 Bucheon Gyeonggi 833,148 843,794 842,482 833,931 757,832 16 Ansan Gyeonggi 717,345 747,035 699,063 669,839 554,998 17 Namyangju Gyeonggi 696,033 629,061 526,639 424,446 339,545 18 Cheonan South Chungcheong 682,199 629,062 565,201 518,171 415,818 19 Jeonju North Jeolla 666,517 658,172 646,512 622,092 615,804 20 Gimhae South Gyeongsang 552,427 534,124 484,244 428,893 330,829 21 Pyeongtaek Gyeonggi 542,522 457,873 381,731 374,262 342,806 22 Anyang Gyeonggi 542,336 585,177 596,772 609,886 578,845 23 Siheung Gyeonggi 535,147 425,184 393,293 384,304 304,260 24 Pohang North Gyeongsang 501,109 511,804 508,736 488,433 515,187 25 Jeju (City)[5] Jeju (Prov.) 492,306 451,758 398,677 391,132 366,809 26 Uijeongbu Gyeonggi 449,572 421,579 415,170 397,694 354,422 27 Gimpo Gyeonggi 474,546 352,683 217,280 192,716 148,576 28 Paju Gyeonggi 460,541 415,345 323,955 239,823 177,128 29 Gumi North Gyeongsang 416,603 421,075 399,019 381,583 339,457 30 Gwangju[6] Gyeonggi 385,141 310,278 224,269 204,266 124,789 31 Sejong[7] (Special autonomous city) 353,933 204,088 80,542 80,389 79,745 32 Wonju Gangwon 352,429 330,854 309,803 283,583 267,849 33 Jinju South Gyeongsang 352,403 349,788 335,297 336,355 339,413 34 Yangsan South Gyeongsang 351,206 297,532 249,529 215,845 191,147 35 Asan South Chungcheong 340,518 319,929 272,282 206,851 179,900 36 Gwangmyeong Gyeonggi 298,116 338,509 326,418 319,452 333,596 37 Iksan North Jeolla 285,312 301,723 294,479 306,974 322,636 38 Chuncheon Gangwon 284,645 281,596 274,220 260,234 252,177 39 Gyeongsan North Gyeongsang 283,733 278,500 260,643 240,371 226,713 40 Hanam Gyeonggi 279,795 154,838 137,569 121,646 120,149 41 Gunpo Gyeonggi 275,571 285,721 274,198 268,917 262,593 42 Suncheon South Jeolla 272,449 265,390 257,800 261,519 265,724 43 Yeosu South Jeolla 271,505 273,761 268,727 277,420 303,115 44 Gunsan North Jeolla 269,023 275,155 258,845 249,212 272,129 45 Gyeongju North Gyeongsang 261,778 262,310 252,750 266,131 275,132 46 Geoje South Gyeongsang 246,965 261,371 225,014 193,398 167,231 47 Osan Gyeonggi 240,645 213,840 180,996 131,792 102,287 48 Yangju[8] Gyeonggi 233,286 205,988 183,673 149,931 107,440 49 Icheon Gyeonggi 226,212 209,003 192,918 187,514 179,081 50 Mokpo South Jeolla 224,509 239,524 248,694 244,543 250,336 51 Chungju North Chungcheong 218,412 211,005 201,361 204,248 217,510 52 Gangneung Gangwon 216,542 215,677 217,481 220,706 227,856 53 Anseong Gyeonggi 203,030 194,765 175,824 157,632 132,906 54 Guri Gyeonggi 192,051 180,063 184,503 186,954 160,485 55 Seogwipo[9] Jeju (Prov.) 178,552 153,861 129,734 139,554 145,732 56 Seosan South Chungcheong 176,379 169,221 155,082 143,692 142,972 57 Dangjin[10] South Chungcheong 168,955 163,762 135,106 112,267 117,447 58 Uiwang Gyeonggi 160,230 154,879 143,378 143,568 117,594 59 Andong North Gyeongsang 159,412 168,581 165,399 169,436 181,974 60 Pocheon[11] Gyeonggi 157,939 163,388 136,580 139,472 135,758 61 Gwangyang South Jeolla 143,928 144,414 137,100 135,583 132,568 62 Gimcheon North Gyeongsang 139,145 137,540 126,823 135,166 147,269 63 Jecheon North Chungcheong 134,768 136,350 133,626 132,483 143,537 64 Tongyeong South Gyeongsang 127,984 137,208 127,896 121,115 123,747 65 Nonsan South Chungcheong 119,707 124,246 117,686 124,779 137,452 66 Yeoju[12] Gyeonggi 113,352 109,937 100,052 98,441 97,412 67 Naju South Jeolla 113,293 92,582 77,825 86,823 99,233 68 Sacheon South Gyeongsang 111,184 113,335 106,175 106,532 110,912 69 Gongju[13] South Chungcheong 108,333 113,542 120,660 126,484 130,223 70 Jeongeup North Jeolla 106,706 110,627 109,458 115,416 128,892 71 Yeongju North Gyeongsang 103,818 109,266 108,268 113,670 126,415 72 Miryang South Gyeongsang 103,228 103,069 98,564 105,651 115,787 73 Yeongcheon North Gyeongsang 100,353 97,669 94,350 103,289 110,918 74 Boryeong South Chungcheong 99,088 101,852 97,091 96,992 109,423 75 Sangju North Gyeongsang 95,473 98,760 97,559 105,600 116,365 76 Dongducheon Gyeonggi 95,239 97,424 90,433 78,897 72,366 77 Donghae Gangwon 87,801 90,255 90,321 93,018 96,280 78 Sokcho Gangwon 80,054 79,846 80,505 84,706 87,880 79 Gimje North Jeolla 79,733 84,269 82,739 90,376 102,428 80 Namwon North Jeolla 78,097 80,499 78,425 85,828 94,810 81 Mungyeong North Gyeongsang 68,212 71,863 68,692 70,813 90,778 82 Samcheok Gangwon 65,939 69,509 67,131 67,957 75,592 83 Gwacheon Gyeonggi 58,018 64,817 66,319 56,587 66,592 84 Taebaek Gangwon 41,494 46,715 51,400 55,241 54,164 85 Gyeryong[14] South Chungcheong 40,854 39,243 41,395 31,646 27,104