Petersburg Borough, Alaska Demographics 2026

Population Overview

Petersburg Borough is located in Alaska with a total population of 3,409. It is the 21st most populous county out of 30 in Alaska. The county encompasses 2 Census-designated places.

Age Demographics

The median age in Petersburg Borough is 45.7 years. This is 28% higher than the state median of 35.8 years.

Economy, Income & Housing

The median household income in Petersburg Borough is $75,125. This is 19% lower than the state median of $92,788. It is also 7% lower than the national median of $80,734. The poverty rate stands at 7.0%. This is 31% lower than the state poverty rate of 10.1%. The unemployment rate is 3.8%. This is 36% lower than the state rate of 5.9%. The median home value is $315,100. Housing costs are 11% lower than the state median of $352,900. The home-value-to-income ratio is 4.2x. 65.7% of occupied housing units are owner-occupied. This homeownership rate is 2% lower than the state average of 66.8%.

Race & Ethnicity

The largest racial or ethnic group in Petersburg Borough is White (non-Hispanic), making up 61.5% of the population. Asian residents account for 12.4%. The Black or African American population (1.3%) is well below the state average of 2.9%. The Asian population is significantly higher than the state average (12.4% vs 6.3%).

Education

25.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 18% lower than the state rate of 31.7%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 90.5%.

Data Sources & Methodology

All figures for Petersburg Borough come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Alaska and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.