Honolulu County, officially known as the City and County of Honolulu (formerly Oahu County), is a consolidated city-county in the U.S. state of Hawaii. The city-county includes both Urban Honolulu (the state's capital and largest community) and the rest of the neighborhoods on the island of Oʻahu, as well as several minor outlying islands, including all of the Northwestern Hawaiian Islands (islands beyond Niihau) except Midway Atoll.