Demographics of Alaska As of 2005, Alaska has an estimated population of 663,661, which is an increase of 5,906, or 0.9%, from the prior year and an increase of 36,730, or 5.9%, since the year 2000. This includes a natural increase since the last census of 36,590 people (53,132 births minus 16,542 deaths), and an increase due to net migration of 1,181 people into the state. Demographics_of_Alaska