Kōkai-dō

Kōkai-dō (黃海道), alternatively Kōkai Province, was a province of Korea under Japanese rule. Its capital was at Kaishū (now Haeju). The province consisted of what is now the Hwanghae Province of North Korea.

Population
Number of people by nationality according to the 1936 census:


 * Overall population: 1,639,250 people
 * Japanese: 20,582 people
 * Koreans: 1,614,738 people
 * Other: 3,970 people

Cities

 * Kaishū (海州) - (capital): Haeju (해주).

Counties

 * Hekijō (碧城): Byeokseong (벽성). present Yeonpyeongdo in Byeokseong County is annexed in Incheon Metropolitan City.
 * Enpaku (延白): Yeonbaek (연백).
 * Kinsen (金川): Geumcheon (금천).
 * Heizan (平山): Pyeongsan (평산).
 * Shinkei (新溪): Singye (신계).
 * Chōen (長淵): Jangyeon (장연). present Baengnyeongdo, Daecheongdo and Socheongdo in Jangyeon County are annexed in Incheon Metropolitan City.
 * Shōka (松禾): Songhwa (송화).
 * Inritsu (殷栗): Eunyul (은율).
 * Angaku (安岳): Anak (안악).
 * Shinsen (信川): Sincheon (신천).
 * Sainei (載寧): Jaeryeong (재령).
 * Kōshū (黃州): Hwangju (황주).
 * Hōzan (鳳山): Bongsan (봉산).
 * Zuikō (瑞興): Seoheung (서흥).
 * Suian (遂安): Suan (수안).
 * Kokuzan (谷山): Goksan (곡산).
 * Ōshin (甕津): Ongjin (옹진).