Socheongdo or Socheong Island is a small 5 kilometer long and 3 kilometer wide island in

Ongjin County Ongjin County may refer to: * Ongjin County, Incheon, South Korea * Ongjin County, South Hwanghae Ongjin County is a county in southern South Hwanghae Province, North Korea. It is located on the Ongjin Peninsula, which projects into the Yellow ...

, Incheon,

South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korean Peninsula and sharing a land border with North Korea. Its western border is formed by the Yellow Sea, while its eas ...

, located in south Daecheong Island, near the

Northern Limit Line The Northern Limit Line or North Limit Line (NLL) – 북방한계선 (in ROK) – is a disputed maritime demarcation line in the Yellow (West) Sea between the Democratic People's Republic of Korea (DPRK) on the north, and the Republic of Ko ...

. It is situated in the

Yellow Sea The Yellow Sea is a marginal sea of the Western Pacific Ocean located between mainland China and the Korean Peninsula, and can be considered the northwestern part of the East China Sea. It is one of four seas named after common colour ter ...

, lying 200 km northwest of Incheon, 40 km southwest of the mainland of

South Hwanghae South Hwanghae Province (Hwanghaenamdo; , lit. "south Yellow Sea province") is a province in western North Korea. The province was formed in 1954 when the former Hwanghae Province was split into North and South Hwanghae. The provincial capital ...

North Korea North Korea, officially the Democratic People's Republic of Korea (DPRK), is a country in East Asia. It constitutes the northern half of the Korean Peninsula and shares borders with China and Russia to the north, at the Yalu (Amnok) and T ...

, and 200 km northeast of

Shandong Peninsula The Shandong (Shantung) Peninsula or Jiaodong (Chiaotung) Peninsula is a peninsula in Shandong Province in eastern China, between the Bohai Sea to the north and the Yellow Sea to the south. The latter name refers to the east and Jiaozhou. Geo ...

, China.Selected records from Socheong Island, South Korea
As of 2015 it had a population of 266.

Notes

{{Korea-geo-stub Islands of Incheon Islands of the Yellow Sea Ongjin County, Incheon