Chŏngju (Korean pronunciation: [tsʌŋ.dzu]; also Jŏngju) is a si, or city, in southern North P'yŏngan province, North Korea. Prior to 1994, it was designated as a kun or county. The terrain is mostly level, but mountainous in the north. To the south lies the Chŏngju Plain, where the hills do not rise above 200 metres (660 ft). Chŏngju also includes approximately 10 islands in the Yellow Sea.