Wikipedia There is more information available on this subject at Kyonggi Province on the English Wikipedia.
Location of Kyonggi

Location of the Kyonggi Province

The Gyeonggi-do (Kyonggi) Province is the most populous province in South Korea. The provincial capital is located at Suwon. Seoul, South Korea's largest city and national capital, is located in the heart of the province, but has been separately administered as a provincial-level Special City in 1946.