Hawaii has an estimated population of 1,275,194, which is an increase of 13,070, or 1.0%, from the prior year and an increase of 63,657, or 5.3%, since the year 2000. This includes a natural increase since the last census of 48,111 people (that is 96,028 births minus 47,917 deaths) and an increase due to net migration of 16,956 people into the state. Immigration from outside the United States resulted in a net increase of 30,068 people, and migration within the country produced a net loss of 13,112 people. The center of population of Hawaii is located in directly between the two islands of Oahu and Molokai [2].

Hawaii has a de facto population of over 1.3 million due to military presence and tourists. Oahu, which is aptly nicknamed "The Gathering Place", is the most populous island (and the one with the highest population density), with a resident population of just under one million in 597 square miles, about 1,650 people per square mile. New Jersey with 8,717,925 people in 7,417 square miles is considered the most-densely populated state with 1,134.4 people per square mile.[9] Hawaii's 1,275,194 people, spread over 6,423 square miles (including many unpopulated islands) results in an average population density of 188.6 persons per square mile,[10] which makes Hawaii less densely populated than rural states like Ohio and Illinois.[11]

Hawaii may be an especially healthy place to live. Hawaiians born in the year 2000 can expect to live 79.8 years (77.1 years if male, 82.5 if female), longer than the residents of any other state.[12] Mississippi came in 50th, living 73.6 years (70.4 male and 76.7 female), but the District of Columbia was dead last, living 72.6 years (68.5 male and 76.1 female).