Petersburg Borough, Alaska Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 21st-largest in Alaska
The population of Petersburg Borough, Alaska is 3,394 as of the 2023 American Community Survey, making it the 21st-largest county in Alaska. The median household income is $77,026, the median home value is $301,300, and the median age is 45.7.
The population of Petersburg Borough has grown 6.7% since 2010 (3,219 → 3,436), a +0.47% annualized rate.
3,394
Population
+0.47%
Annual growth
1
People / sq mi
$77,026
Median Income
$301,300
Median Home Value
Petersburg Borough covers 2,901 sq mi of land at 1.2 people per square mile.
About Petersburg Borough, AK
Petersburg Borough is a county in Alaska with a population of 3,394. It ranks #21 among counties in Alaska by population. The median age is 45.7, older than the national median. The population is 50.0% male and 50.0% female.
The median household income in Petersburg Borough is $77,026, near the US median of $74,580. 4.3% of residents live below the federal poverty level. Home values sit at a median of $301,300, with monthly rent averaging $1,208. The homeownership rate of 71.0% is higher than the national rate of 64.8%.
Educational attainment in Petersburg Borough reflects 27.5% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.4% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 7.1 minutes each way.
Petersburg Borough Population History (2010-2024)
The county of Petersburg Borough had a population of 3,219 in 2010 and 3,436 in 2024, a 6.7% growth over 14 years. The peak was 3,436 in 2024. Average annual growth rate: 0.47%.
3,436
Population (2024)
3,219
Population (2010)
3,436
Peak (2024)
0.47%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 3,219 |
| 2011 | 3,255 |
| 2012 | 3,276 |
| 2013 | 3,288 |
| 2014 | 3,256 |
| 2015 | 3,251 |
| 2016 | 3,262 |
| 2017 | 3,284 |
| 2018 | 3,256 |
| 2019 | 3,294 |
| 2020 | 3,407 |
| 2021 | 3,385 |
| 2022 | 3,381 |
| 2023 | 3,431 |
| 2024 | 3,436 |
Race & Ethnicity
| White | 61.7% |
| Black or African American | 1.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 15.0% |
| Two or More Races | 0.4% |
Age & Sex
45.7
Median Age
50.0%
Female
50.0%
Male
22.0%
Age 65+
Age Distribution
Children (under 15): 16.2% · Seniors (65+): 22.0%
Income & Poverty
| Median household income | $77,026$-12,310 vs state |
| Mean household income | $98,129 |
| Per-capita income | $42,380 |
| Poverty rate | 4.3%-2.5% vs state |
| Unemployment rate | 2.7% |
| Employment-to-population | 61.4% |
Top Industries by Employment
The largest employment sector in Petersburg Borough is professional & business services, accounting for 24.1% of workers.
How residents commute
0.2%
Drive alone
21.0%
Carpool
52.2%
Public transit
7.4%
Work from home
7.1 min
Avg commute
Housing
$301,300$-32,000 vs state
Median home value
$1,208
Median rent
71.0%
Homeownership rate
1,871
Total housing units
70.5%
Occupied
29.5%
Vacant
29.0%
Renter-occupied
Social & access
89.1%
With health insurance
94.1%
With broadband internet
47.0%
Foreign-born
6.5%
Veterans (18+)
16.1%
With a disability
82.8%
Speak language other than English at home
Education
90.6%
High School+
27.5%
Bachelor's+
Largest cities in Alaska
Other counties in Alaska
Part of Alaska
Metro areas in Alaska
County rankings
Frequently Asked Questions
Petersburg Borough, Alaska has a population of 3,394 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 21st-largest county in Alaska. Population density is 1 people per square mile.
The population of Petersburg Borough has grown 6.7% since 2010 (3,219 → 3,436), a +0.47% annualized rate.
The median household income in Petersburg Borough, Alaska is $77,026, with mean (average) household income of $98,129 and per-capita income of $42,380. 4.3% of residents live below the federal poverty level.
In Petersburg Borough, the largest racial and ethnic groups are White (61.7%), Hispanic or Latino (15.0%), Black or African American (1.5%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Petersburg Borough, Alaska is 45.7 years. Residents are 50.0% female and 50.0% male.
The median home value in Petersburg Borough is $301,300 and median monthly rent is $1,208. 71.0% of occupied housing units are owner-occupied. The county has 1,871 total housing units, 29.5% of which are vacant.
The largest employment sector in Petersburg Borough, Alaska is professional, scientific, and management services, employing 24.1% of workers. The unemployment rate is 2.7%.
Anchorage is among the largest cities associated with Petersburg Borough, Alaska, with a population of 289,069.
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Statewide data for Alaska
Population, race, income, age, and trends across Alaska
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.