Kapolei is being developed as a second city center for O'ahu (after Honolulu), the most densely populated island in the State of Hawai'i. Much of the population growth is occurring, and future population growth is slated for, the Ewa Plain and southern slopes of the island's central valley: that is the former agricultural lands of Ewa and the gentle slopes between Waipahu on Pearl Harbor and Wahiawa near the center of the island.