Petersburg, Alaska Séet Ká
Census-designated place
Aerial view of Petersburg
Motto:  "Little Norway. Big Adventure."
Location of Petersburg in Alaska
Coordinates: 56°48′16″N 132°56′31″W / 56.80444°N 132.94194°W / 56.80444; -132.94194
Country	United States
State	Alaska
Borough	Petersburg
Area [1]
• Total	46.30 sq mi (119.93 km2)
• Land	44.17 sq mi (114.40 km2)
• Water	2.14 sq mi (5.53 km2)
Population  (2020)[2]
• Total	3,043
• Density	68.89/sq mi (26.60/km2)
ZIP code	99833
Area code	907
FIPS code	02-60310

Petersburg is a town in southeast Alaska, United States. It is on Mitkof Island. There are no bridges so Petersburg can only be reached by air or sea.

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