Kapolei is a planned community in Honolulu County, Hawaiʻi, United States, on the island of Oʻahu. It is colloquially known as the "second city" of Oʻahu, in relation to Honolulu. For statistical purposes, the United States Census Bureau has defined Kapolei as a census-designated place within the consolidated city-county of Honolulu. The community takes its name from a volcanic cone, Puʻu o Kapolei. In the Hawaiian language, puʻu means "hill" and Kapo lei means "beloved Kapo".