Petersburg is located in Alaska. Petersburg, Alaska has a population of 3,259. Petersburg is more family-centric than the surrounding county with 25.87% of the households containing married families with children. The county average for households married with children is 25.36%.
The median household income in Petersburg, Alaska is $73,289. The median household income for the surrounding county is $71,696 compared to the national median of $69,021. The median age of people living in Petersburg is 48.2 years.
The average high temperature in July is 64 degrees, with an average low temperature in January of 26 degrees. The average rainfall is approximately 109.2 inches per year, with 76.7 inches of snow per year.