Seoul began its sister city program in 1968 with Taipei, Taiwan. Since then, Seoul has signed agreements on the establishment of sister ties with 23 cities around the world and signed MOUs with 18 cities for international cooperation. The main purpose of the sister city program is to strengthen relations between Seoul and other international cities in an effort to establish global cooperation and promote cultural understanding. Listed below are general information and links to the official websites of Seoul’s sister cities and MOU cities. For more details on Seoul’s sister city program, please contact the International Cooperation Division of Seoul Metropolitan Government. 

  • Address :Seoul City Hall, 110 Sejong-daero, Jung-gu, Seoul , Seoul, Korea 100-744
  • Tel  :+82.2.2133.5260
  • Fax :+82.2.2133.0704

02PollicyInfo_02국제교류_02자매우호도시_ENG

Sister cities

Taiwan  | Taipei
  • Population : 2,670,000
  • Size(㎢) : 272
  • Date of Establishment of Ties : 68,03,23
Brazil  | San Paulo
  • Population : 11,310,000
  • Size(㎢) : 1,522
  • Date of Establishment of Ties : 77. 4.20
Russia  | Moscow
  • Population : 11,510,000
  • Size(㎢) : 2,511
  • Date of Establishment of Ties : 91. 7.13

Australia  | New South Wales

  • Population : 7,210,000
  • Size(㎢) : 800,642
  • Date of Establishment of Ties : 91.11. 8
China  | Beijing
  • Population : 22,000,000
  • Size(㎢) : 16,808
  • Date of Establishment of Ties : 93.10.23
Poland  | Warsaw
  • Population : 1,720,000
  • Size(㎢) : 517
  • Date of Establishment of Ties : 96. 6.20
Kazakhstan  | Astana
  • Population : 780,000
  • Size(㎢) : 722
  • Date of Establishment of Ties : 04.11. 6
Thailand  | Bangkok
  • Population : 8,280,000
  • Size(㎢) : 1,568
  • Date of Establishment of Ties : 06. 6.16
Turkey  | Ankara
  • Population : 4,330,000
  • Size(㎢) : 2,516
  • Date of Establishment of Ties : 71. 8.23
USA  | Honolulu
  • Population : 390,000
  • Size(㎢) : 177
  • Date of Establishment of Ties : 73.10.22
Colombia  | Bogota
  • Population : 7,670,000
  • Size(㎢) : 1,587
  • Date of Establishment of Ties : 82. 6.14

France  | Paris

  • Population : 2,210,000
  • Size(㎢) : 105
  • Date of Establishment of Ties : 91.11.12
Mongolia  | Ulaanbaatar
  • Population : 1,270,000
  • Size(㎢) : 4,704
  • Date of Establishment of Ties : 95.10. 6
Egypt  | Cairo
  • Population : 8,000,000
  • Size(㎢) : 1,881
  • Date of Establishment of Ties : 97. 4.27
USA  | Washington D.C.
  • Population : 630,000
  • Size(㎢) : 177
  • Date of Establishment of Ties : 06. 3.13
Uzbekistan | Tashkent
  • Population : 2,300,0000
  • Size(㎢) : 335
  • Date of Establishment of Ties : 10. 7. 2
USA  | San Francisco
  • Population : 820,000
  • Size(㎢) : 600
  • Date of Establishment of Ties : 76. 5.18
Indonesia  | Jakarta
  • Population : 10,180,000
  • Size(㎢) : 740
  • Date of Establishment of Ties : 84. 7.25
Japan  | Tokyo
  • Population : 13,280,000
  • Size(㎢) : 2,188
  • Date of Establishment of Ties : 88. 9. 3

Mexico  | Mexico City

  • Population : 8,850,000
  • Size(㎢) : 1,485
  • Date of Establishment of Ties : 92.10. 5
Vietnam  | Hanoi
  • Population : 6,490,000
  • Size(㎢) : 3,324
  • Date of Establishment of Ties : 96. 5. 1
Italie | Rome
  • Population : 2,630,000
  • Size(㎢) : 1,285
  • Date of Establishment of Ties : 00. 3.18
Greece  | Athens
  • Population : 660,000
  • Size(㎢) : 38
  • Date of Establishment of Ties : 06. 5.15

MOU cities

Canada  |  Ottawa
  • Population : 810,000
  • Size(㎢) : 2,778
  • Date of Establishment of Ties : 97.1.10
Hungary  |  Budapest
  • Population : 1,800,000
  • Size(㎢) : 525
  • Date of Establishment of Ties : 05.7.14
Italy  |  Milan
  • Population : 1,270,000
  • Size(㎢) : 182
  • Date of Establishment of Ties : 07.2.1
China  |  Jiangsu
  • Population : 7,4330000
  • Size(㎢) : 102,600
  • Date of Establishment of Ties : 08.7.21
China  |  Tianjin
  • Population : 11,760,000
  • Size(㎢) : 11,305
  • Date of Establishment of Ties : 09.4.12
Mozambique  |  Maputo
  • Population : 1,250,000
  • Size(㎢) : 346
  • Date of Establishment of Ties : 11.6.13
Spain |  Barcelona
  • Population : 1,600,000
  • Size(㎢) : 100
  • Date of Establishment of Ties : 12.11.13
Germany  |  Berlin
  • Population : 3,290,000
  • Size(㎢) : 891
  • Date of Establishment of Ties : 97.4.23
Turkey  |  Istanbul
  • Population : 1,3850,000
  • Size(㎢) : 1,538
  • Date of Establishment of Ties : 05.8.24
Belarus  |  Minsk
  • Population : 1,720,000
  • Size(㎢) : 256
  • Date of Establishment of Ties : 08.7.8
China  |  canton
  • Population : 9,6380000
  • Size(㎢) : 178,000
  • Date of Establishment of Ties : 08.7.22
Ethiopia  |  Addis Ababa
  • Population : 3,400,000
  • Size(㎢) : 530
  • Date of Establishment of Ties : 10.9.29
Romania  |  Bucharest
  • Population : 2,080,000
  • Size(㎢) : 228
  • Date of Establishment of Ties : 12.5.9
Netherlands  |  Amsterdam
  • Population : 800,000
  • Size(㎢) : 219
  • Date of Establishment of Ties : 99.3.15
USA  |  Los Angeles
  • Population : 3,850,000
  • Size(㎢) : 1,301
  • Date of Establishment of Ties : 06.10.16
China  |  Shijiazhuang
  • Population : 9,4170000
  • Size(㎢) : 157,000
  • Date of Establishment of Ties : 08.7.19
China  |  Zhejiang
  • Population : 5,1800000
  • Size(㎢) : 102,000
  • Date of Establishment of Ties : 09.4.10
Japan  |  Hokkaido
  • Population : 5,570,000
  • Size(㎢) : 83,456
  • Date of Establishment of Ties : 10.10.15
Argentina  |  Buenos Aires
  • Population : 3,000,000
  • Size(㎢) : 203
  • Date of Establishment of Ties : 12.6.25