Petersburg, AK has a population of 2,996 and is the 8,823rd largest city in the United States. The population density is 68 per sq mi which is 6072% higher than the Alaska average and 25% lower than the national average. The median age in Petersburg is 40 which is approximately 20% higher than the Alaska average of 34. In Petersburg, 55% of the population over 15 years of age are married, 84% speak English and 9% speak Spanish. 40% of Petersburg residents were born in Alaska, 51% were born out of state, 1% were born outside of the United States and 8% were foreign born.
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The population density in Petersburg is 6072% higher than Alaska.
The median age in Petersburg is 20% higher than Alaska.
In Petersburg 75.63% of the population is White.
In Petersburg 2.50% of the population is Black or African American.