🌆 Largest Cities in South Korea
Cities and metropolitan cities ranked by population at the 2020 census.
Seoul20%
Busan6.9%
Incheon6.1%
Daegu5%
Daejeon3.1%
Gwangju3.1%
Suwon2.5%
Ulsan
Yongin
Goyang
Changwon2.1%
Seongnam1.9%
Hwaseong1.8%
Cheongju1.8%
Bucheon1.7%
Ansan
Namyangju
Cheonan
Jeonju
Gimhae
Pyeongtaek
Anyang
Siheung
Pohang
Jeju (City)
Gimpo
Paju
Uijeongbu
Gumi
Gwangju (Gyeonggi)
Sejong
Wonju
Jinju
Yangsan
Asan
45 others14%
1
SeoulSpecial city
9,586,195
2
BusanMetropolitan city
3,349,016
3
IncheonMetropolitan city
2,945,454
4
DaeguMetropolitan city
2,410,700
5
DaejeonMetropolitan city
1,488,435
6
GwangjuMetropolitan city
1,477,573
7
SuwonGyeonggi
1,210,150
8
UlsanMetropolitan city
1,135,423
9
YonginGyeonggi
1,066,975
10
GoyangGyeonggi
1,045,497
11
ChangwonSouth Gyeongsang
1,029,389
12
SeongnamGyeonggi
922,025
13
HwaseongGyeonggi
880,859
14
CheongjuNorth Chungcheong
855,326
15
BucheonGyeonggi
833,148
16
AnsanGyeonggi
717,345
17
NamyangjuGyeonggi
696,033
18
CheonanSouth Chungcheong
682,199
19
JeonjuNorth Jeolla
666,517
20
GimhaeSouth Gyeongsang
552,427
21
PyeongtaekGyeonggi
542,522
22
AnyangGyeonggi
542,336
23
SiheungGyeonggi
535,147
24
PohangNorth Gyeongsang
501,109
25
Jeju (City)Jeju Prov.
492,306
26
GimpoGyeonggi
474,546
27
PajuGyeonggi
460,541
28
UijeongbuGyeonggi
449,572
29
GumiNorth Gyeongsang
416,603
30
Gwangju (Gyeonggi)Gyeonggi
385,141
31
SejongSpecial autonomous city
353,933
32
WonjuGangwon
352,429
33
JinjuSouth Gyeongsang
352,403
34
YangsanSouth Gyeongsang
351,206
35
AsanSouth Chungcheong
340,518
36
GwangmyeongGyeonggi
298,116
37
IksanNorth Jeolla
285,312
38
ChuncheonGangwon
284,645
39
GyeongsanNorth Gyeongsang
283,733
40
HanamGyeonggi
279,795
41
GunpoGyeonggi
275,571
42
SuncheonSouth Jeolla
272,449
43
YeosuSouth Jeolla
271,505
44
GunsanNorth Jeolla
269,023
45
GyeongjuNorth Gyeongsang
261,778
46
GeojeSouth Gyeongsang
246,965
47
OsanGyeonggi
240,645
48
YangjuGyeonggi
233,286
49
IcheonGyeonggi
226,212
50
MokpoSouth Jeolla
224,509
51
ChungjuNorth Chungcheong
218,412
52
GangneungGangwon
216,542
53
AnseongGyeonggi
203,030
54
GuriGyeonggi
192,051
55
SeogwipoJeju Prov.
178,552
56
SeosanSouth Chungcheong
176,379
57
DangjinSouth Chungcheong
168,955
58
UiwangGyeonggi
160,230
59
AndongNorth Gyeongsang
159,412
60
PocheonGyeonggi
157,939
61
GwangyangSouth Jeolla
143,928
62
GimcheonNorth Gyeongsang
139,145
63
JecheonNorth Chungcheong
134,768
64
TongyeongSouth Gyeongsang
127,984
65
NonsanSouth Chungcheong
119,707
66
YeojuGyeonggi
113,352
67
NajuSouth Jeolla
113,293
68
SacheonSouth Gyeongsang
111,184
69
GongjuSouth Chungcheong
108,333
70
JeongeupNorth Jeolla
106,706
71
YeongjuNorth Gyeongsang
103,818
72
MiryangSouth Gyeongsang
103,228
73
YeongcheonNorth Gyeongsang
100,353
74
BoryeongSouth Chungcheong
99,088
75
SangjuNorth Gyeongsang
95,473
76
DongducheonGyeonggi
95,239
77
DonghaeGangwon
87,801
78
SokchoGangwon
80,054
79
GimjeNorth Jeolla
79,733
80
NamwonNorth Jeolla
78,097
81
MungyeongNorth Gyeongsang
68,212
82
SamcheokGangwon
65,939
83
GwacheonGyeonggi
58,018
84
TaebaekGangwon
41,494
85
GyeryongSouth Chungcheong
40,854
Highlights
Within South Korea, Seoul ranks first in 2020 with 9,586,195, followed by Busan (3,349,016) and Incheon (2,945,454).
Seoul is 2.9 times higher than Busan, the runner-up.
Across 85 entries, values run from 9,586,195 (Seoul) to 40,854 (Gyeryong), with a median of 271,505.
Source: Statistics Korea, 2020 population census (via Wikipedia), 2020. Unit: people.
Source: Statistics Korea, 2020 population census (via Wikipedia) · CC BY-SA 4.0 (Wikipedia); underlying data © the cited publisher · fetched Oct 13, 2026