Port Alsworth is a census-designated place in Lake and Peninsula Borough, Alaska, United States. It is 165 miles by air southwest of Anchorage. The population was 159 at the 2010 census, up from 104 in 2000.
Port Alsworth was founded in 1950 by Babe Alsworth, a missionary and bush pilot, and Mary Alsworth, who was the town's first postmaster.
Port Alsworth is located on private land within Lake Clark National Park and Preserve and the site of the national park's field headquarters.
Address 00005, United States
Coordinates 60°10'7.799" N -154°19'24.084" E