[7] KPCA started as a presbytery established by pastors with Presbyterian Church in Korea(PCK) backgrounds in Los Angeles, New York, and Chicago.

Therefore, KPCA has had a very close cooperative relationship with Korean PCK from the beginning.

KPCA signed the 3rd mission agreement with PCK in 2016 following 1986 and 2006 to strengthen friendship between the two denominations in Korea and the United States, and exchange information on churches, mission consultations, mutual cooperation, personnel exchanges, Christian education and theological education.

[8] The “Covenant Relationship” of KPCA and PC(USA) was formally passed by the Presbyterian Church (USA) at the 218th General Assembly, and after that, it was approved through 176 presbyteries and is included in the Book of Order of the Presbyterian Church (U.S.A.).

The executive committee, composed of representatives of both denominations, gathers every year to promote cooperative relations with both denominations, and jointly plan and hold pastoral exchanges (transfer and support) and events (education, ministry, second-generation leaders, etc.)