Petersburg, AK Profile: Facts, Map & Data


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Petersburg, Alaska - Basic Facts

The City of Petersburg (historical) had a population of 2,603 as of July 1, 2017. Petersburg ranks in the upper quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Alaska. See peer rankings below.

The primary coordinate point for Petersburg is located at latitude 56.7543 and longitude -132.8738 in Petersburg Borough Borough. The formal boundaries for the City of Petersburg (historical) (see map below) encompass a land area of 44.14 sq. miles and a water area of 1.5 sq. miles. Petersburg Borough Borough is in the Alaska time zone (GMT -9). The elevation is 52 feet.

The City of Petersburg (historical) (GNIS ID: 2761697) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Petersburg (historical) is located within the Petersburg Census Subarea of Petersburg Borough Borough. Census subareas are statistical subdivisions of the county equivalents used in Alaska (boroughs, city and boroughs, municipalities, and census areas) and are the statistical equivalent of Micro Civil Divisions (MCDs) used in other states.

Beneath the boundary map are tables with Petersburg population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Petersburg: Seet Ka.

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City of Petersburg (historical), AK Boundary Map

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Boundary Maps: Petersburg Census Subarea | Petersburg Borough Borough | Alaska Boroughs / Census Areas (CA)

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Petersburg, AK Data & Demographics (As of July 1, 2017)


Total Population 2,603
Daytime Population: Workers 2,081
Daytime Population: Residents 698
Total Daytime Population (TDP) 2,779
Ratio TDP/Total Population1 1.07
Population in Households 2,560
Population in Familes 2,004
Population in Group Qrtrs 43
Population Density2 59
Diversity Index3 54


Median Household Income $55,112
Average Household Income $72,556
Per Capita Income $31,075


Total Housing Units 1,351 (100%)
Owner Occupied HU 743 (55.0%)
Renter Occupied HU 366 (27.1%)
Vacant Housing Units 242 (17.9%)
Median Home Value $254,688
Average Home Value $243,943


Total Households 1,109
Average Household Size 2.31
Family Households 693
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population -1.7% -0.38%
Households -1.66% -0.35%
Families -1.81% -0.5%
Median Household Income   2.96%
Per Capita Income   2.7%

Petersburg, AK - Peer Comparisons by Rank and Percentile

The table below compares Petersburg to the other 354 incorporated cities, towns and CDPs in Alaska by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 38 90th
Population Density # 100 72nd
Diversity Index # 86 76th
Median Household Income # 130 64th
Per Capita Income # 106 70th

Additional comparisons and rankings can be made with a VERY EASY TO USE Alaska Census Data Comparison Tool.

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