| Election Name: | 2018 South Korean local elections |
| Country: | South Korea |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 2014 South Korean local elections |
| Previous Year: | 2014 |
| Next Election: | 2022 South Korean local elections |
| Next Year: | 2022 |
| Seats For Election: | All 17 metropolitan mayors and governors (All 3,977 seats of provincial and municipal leaders and councillors) |
| Turnout: | 60.2% 3.4 pp |
| Election Date: | 13 June 2018 |
| 1Blank: | Regional offices |
| 2Blank: | Regional offices +/– |
| 3Blank: | Mayors |
| 4Blank: | Mayors +/– |
| 5Blank: | Councillors |
| 6Blank: | Councillors +/– |
| Image1: | Choo Mi-ae ministerial portrait.png |
| Image1 Size: | 150x150px |
| Leader1: | Choo Mi-ae |
| Party1: | Democratic Party of Korea |
| Color1: | 004EA2 |
| 1Data1: | 8 governors 6 mayors |
| 2Data1: | 3 governors 2 mayors |
| 3Data1: | 151 |
| 4Data1: | 71 |
| 5Data1: | 652 1,638 |
| 6Data1: | 303 481 |
| Image2 Size: | 150x150px |
| Leader2: | Hong Jun-pyo |
| Party2: | Liberty Korea Party |
| Color2: | C9151E |
| 1Data2: | 1 governors 1 mayors |
| 2Data2: | 2 governors 3 mayors |
| 3Data2: | 53 |
| 4Data2: | 64 |
| 5Data2: | 137 1009 |
| 6Data2: | 279 404 |
| Image3: | Cho Bae-sook, Leader of the Party for Democracy and Peace attended Lee Hyeon-ung mayor of Jeonju Mayor's election office opening ceremony.jpg |
| Image3 Size: | 150x150px |
| Leader3: | Cho Bae-sook |
| Party3: | Party for Democracy and Peace |
| 1Data3: | 0 |
| 2Data3: | New party |
| 3Data3: | 5 |
| 4Data3: | New party |
| 5Data3: | 3 49 |
| 6Data3: | New party |
| Image4: | Lee Jeong-mi taking a commemorative photo at the National Assembly.jpg |
| Image4 Size: | 150x150px |
| Leader4: | Lee Jeong-mi |
| Party4: | Justice Party (South Korea) |
| 1Data4: | 0 |
| 2Data4: | 0 |
| 3Data4: | 0 |
| 4Data4: | 0 |
| 5Data4: | 11 26 |
| 6Data4: | 11 15 |
| Image5: | Yoo Seong-min in Gangneung (Cropped).jpg |
| Image5 Size: | 150x150px |
| Leader5: | Yoo Seung-min (pictured) Park Joo-sun |
| Party5: | Bareunmirae Party |
| 1Data5: | 0 |
| 2Data5: | New party |
| 3Data5: | 0 |
| 4Data5: | New party |
| 5Data5: | 5 21 |
| 6Data5: | New party |
| Map Size: | 400px |
The 7th local elections were held in South Korea on 13 June 2018. The election coincided with the by-elections for the vacant seats in the National Assembly.[1] The election was a landslide victory for the Democratic Party of Korea, the ruling party, after two successful summits with the third inter-Korean summit on 27 April and the first North Korea-United States summit in Singapore on 12 June.[2]
A total of 17 metropolitan mayors and governors were elected.
Bold on the candidate's name indicates that a candidate has won as metropolitan mayor or governor.
Bold represents incumbent re-elected.
| Metropolitan City/Province | Elected candidate | Party | Remarks | ||
|---|---|---|---|---|---|
| Seoul | Park Won-soon | Hold | |||
| Incheon | Gain | ||||
| Gyeonggi | Gain | ||||
| Gangwon | Choi Moon-soon | Hold | |||
| Daejeon | Hold | ||||
| Sejong | Lee Choon-hee | Hold | |||
| South Chungcheong | Hold | ||||
| North Chungcheong | Lee Si-jong | Hold | |||
| Gwangju | Hold | ||||
| South Jeolla | Hold | ||||
| North Jeolla | Song Ha-jin | Hold | |||
| Busan | Gain | ||||
| Ulsan | Gain | ||||
| South Gyeongsang | Gain | ||||
| Daegu | Kwon Young-jin | Hold | |||
| North Gyeongsang | Hold | ||||
| Jeju | Won Hee-ryong | Hold | |||
A total of 824 Metropolitan and provincial councillors were elected.
| Metropolitan City/Province | Democratic | Liberty Korea | Justice | Bareunmirae | Democracy and Peace | Independent | Total | ||
|---|---|---|---|---|---|---|---|---|---|
| Seoul | 102 | 6 | 1 | 1 | 110 | ||||
| Incheon | 34 | 2 | 1 | 37 | |||||
| Gyeonggi | 135 | 4 | 2 | 1 | 142 | ||||
| Gangwon | 35 | 11 | 46 | ||||||
| Daejeon | 21 | 1 | 22 | ||||||
| Sejong | 17 | 1 | 18 | ||||||
| South Chungcheong | 33 | 8 | 1 | 42 | |||||
| North Chungcheong | 28 | 4 | 32 | ||||||
| Gwangju | 22 | 1 | 23 | ||||||
| South Jeolla | 54 | 2 | 2 | 58 | |||||
| North Jeolla | 36 | 1 | 1 | 1 | 39 | ||||
| Busan | 41 | 6 | 47 | ||||||
| Ulsan | 17 | 5 | 22 | ||||||
| South Gyeongsang | 34 | 21 | 1 | 2 | 58 | ||||
| Daegu | 5 | 25 | 30 | ||||||
| North Gyeongsang | 9 | 41 | 1 | 9 | 60 | ||||
| Jeju | 29 | 2 | 1 | 2 | 4 | 38 | |||
| Total | 652 | 137 | 11 | 5 | 3 | 16 | 824 | ||
A total of 226 municipal mayors (municipal city, county, autonomous district) were elected.
| Metropolitan City/Province | Democratic | Liberty Korea | Democracy and Peace | Independent | Total | ||
|---|---|---|---|---|---|---|---|
| Seoul | 24 | 1 | 25 | ||||
| Incheon | 9 | 1 | 10 | ||||
| Gyeonggi | 29 | 2 | 31 | ||||
| Gangwon | 11 | 5 | 2 | 18 | |||
| Daejeon | 5 | 5 | |||||
| South Chungcheong | 11 | 4 | 15 | ||||
| North Chungcheong | 7 | 4 | 11 | ||||
| Gwangju | 5 | 5 | |||||
| South Jeolla | 14 | 3 | 5 | 22 | |||
| North Jeolla | 10 | 2 | 2 | 14 | |||
| Busan | 13 | 2 | 1 | 16 | |||
| Ulsan | 5 | 5 | |||||
| South Gyeongsang | 7 | 10 | 1 | 18 | |||
| Daegu | 7 | 1 | 8 | ||||
| North Gyeongsang | 1 | 17 | 5 | 23 | |||
| Total | 151 | 53 | 5 | 17 | 226 | ||
A total of 2,926 municipal councillors (municipal city, county, autonomous district) were elected.
| Metropolitan City/Province | Democratic | Liberty Korea | Justice | Bareunmirae | Minjung | Independent | Total | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Seoul | 249 | 157 | 5 | 9 | 3 | 423 | ||||
| Incheon | 71 | 46 | 1 | 118 | ||||||
| Gyeonggi | 290 | 144 | 5 | 4 | 2 | 2 | 446 | |||
| Gangwon | 93 | 63 | 1 | 12 | 169 | |||||
| Daejeon | 38 | 25 | 63 | |||||||
| South Chungcheong | 98 | 66 | 1 | 6 | 171 | |||||
| North Chungcheong | 86 | 43 | 1 | 2 | 132 | |||||
| Gwangju | 55 | 9 | 1 | 3 | 68 | |||||
| South Jeolla | 178 | 26 | 3 | 4 | 32 | 243 | ||||
| North Jeolla | 147 | 14 | 6 | 2 | 28 | 197 | ||||
| Busan | 103 | 78 | 1 | 182 | ||||||
| Ulsan | 27 | 21 | 1 | 1 | 50 | |||||
| South Gyeongsang | 104 | 133 | 3 | 1 | 23 | 264 | ||||
| Daegu | 50 | 62 | 1 | 2 | 1 | 116 | ||||
| North Gyeongsang | 50 | 171 | 1 | 2 | 60 | 284 | ||||
| Total | 1,638 | 1,009 | 49 | 26 | 21 | 11 | 172 | 2,927 | ||