Port Heiden is a city in Lake and Peninsula Borough, Alaska, United States. As of the 2020 census, the population of the city is 100, slight…Port Heiden is a city in Lake and Peninsula Borough, Alaska, United States. As of the 2020 census, the population of the city is 100, slightly down from 102 in 2010. Port Heiden is located at 56°56′56″N 158°39′21″W / 56.94889°N 158.65583°W.