- Real Seoul National Capital Area (linked or very close) (incompleted)
- There are two main cities:
- Seoul Special City - 10,464,051
- Incheon Metropolitan City except Ongjin County, Ganghwa County - 2,625,816
- Ganghwa county and Ongjin county are sets of islands, so far from the mainland.
- West side of Seoul:
- Bucheon - 869,455
- Between Seoul and Incheon. Linked with two main cities.
- South-west side of Seoul:
- Gwangmyeong - 334,526
- Between Seoul and Bucheon. Linked with Seoul and Bucheon.
- Anyang - 622,379
- Linked with Seoul, Gwacheon and Gunpo.
- Gwacheon - 72,088
- Linked with Seoul and Anyang.
- Gunpo - 278,790
- Linked with Anyang and Uiwang.
- Uiwang - 135,058
- Not acutally linked, but very close with Suwon. Linked with Gunpo and Uiwang.
- South-east side of Seoul
- Seongnam - 970,847
- Not actually linked, but very close with Seoul. Linked with Yongin.
- Yongin - 866,759
- Linked with Seongnam and Suwon.
- Suwon - 1,095,957
- Not acutally linked, but very close with Uiwang. Linked with Yongin and Hwaseong(Dongtan).
- Hwaseong - 497,907
- Linked with Suwon and Osan, but actually only Dongtan neighborhoods.
- Osan - 166,809
- Linked with Hwaseong(Dongtan).
- North-west side of Seoul
- Goyang - 938,784
- Not actually linked, but very close with Seoul.
- North side of Seoul
- Uijeongbu - 430,769
- Linked with Seoul.
- East side of Seoul
- Guri - 194,342
- Linked with Seoul.
- South side of Incheon
- Siheung - 417,037
- Linked with Incheon and Ansan.
- Ansan - 742,788
- Linked with Siheung. Close with Gunpo and Suwon.
