The capital of Hawaii is Honolulu. Honolulu is located on the southeast coast of the island of Oahu, about 23 miles from Pearl Harbor. It has been the capital of the Hawaiian Islands since 1845, firstly of the independent Hawaiian Kingdom, and since 1898 of the U.S. territory and state of Hawaii. The city has a population of just over 337,000 people, making it the most populous city in Hawaii.