Molokaʻi or Molokai is the fifth most populated of the eight major islands that make up the Hawaiian Islands archipelago in the middle of the Pacific Ocean. It is 38 by 10 miles at its greatest length and width with a usable land area of 260 sq mi (673.40 km2), making it the fifth-largest in size of the main Hawaiian Islands and the 27th largest island in the United States. It lies southeast of Oʻahu across the 25 mi (40 km) wide Kaʻiwi Channel and north of Lānaʻi, separated from it by the Kalohi Channel.