Korea International Cooperation Agency (KOICA) Headquarters The KOICA Headquarters is in charge of most of KOICA¡¯s administrative affairs and provides support to its overseas offices. In order to streamline Korea¡¯s development cooperation with partner countries, the KOICA Headquarters closely cooperates with related organizations including Ministries, government agencies and NGOs. Address : 825 Siheung-dong, Sujeong-gu, Seongnam-si, 461-833 Gyeonggi-do Tel : 82-31-7400-114 Fax : 82-31-7400-655   MAP