Petersburg (Tlingit: Séet Ká or Gantiyaakw Séedi "Steamboat Channel") is a census-designated place (CDP) in and essentially the borough seat of Petersburg Borough, Alaska, United States. The population was 3,043 at the 2020 census, up from 2,948 in 2010.
Zip Codes in Petersburg, AK that we also serve: 99833