Petersburg, AK Demographics

A map of Petersburg's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	2,006	2,159	62.2%	70.9%
Asian	424	112	13.1%	3.7%
Multiracial	287	341	8.9%	11.2%
Hispanic	279	151	8.6%	5.0%
Native American/Other	186	237	5.8%	7.8%
Black	45	43	1.4%	1.4%

Petersburg, Alaska has an estimated population of 3,227, an increase from the 3,043 recorded in the 2020 Census. The population is 62.2% White, 13.1% Asian, 8.9% Multiracial, 8.6% Hispanic, 5.8% Native American/Other, and 1.4% Black. This demographic dot map shows the population of Petersburg, with one dot drawn for each person counted by the Census, color-coded by race.

Petersburg has become considerably more racially diverse since the 2020 Census. It is less diverse than Alaska overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Petersburg, that probability was 47.4% in 2020 and 57.7% in the most recent ACS estimates.

Petersburg is ranked the 36th most populous place in Alaska, out of 355 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Petersburg was ranked the 37th most populous place in the 2020 Census.

Petersburg's White Population

2,006 residents of Petersburg, or 62.2% of the population, identify as White. The share of White residents in Petersburg is slightly higher than in Alaska overall, where 57.7% of the population is White. Petersburg ranks 120th statewide in terms of White residents as a share of the population, out of 355 places.

Since the 2020 Census, Petersburg's White population has declined by an estimated 7.1%. White residents' share of Petersburg's population has decreased from 70.9% to 62.2%.

Petersburg is more White than neighboring Hobart Bay (0% White). Petersburg is less White than neighboring Kupreanof (100% White), Whale Pass (100% White), Coffman Cove (97.4% White), and Port Protection (100% White).

Petersburg's Black Population

45 residents of Petersburg, or 1.4% of the population, identify as Black. The share of Black residents in Petersburg is comparable to the share in Alaska overall, where 2.9% of the population is Black. Petersburg ranks 37th statewide in terms of Black residents as a share of the population, out of 355 places.

Since the 2020 Census, Petersburg's Black population has grown by an estimated 4.7%. Black residents' share of Petersburg's population has remained roughly unchanged at 1.4%.

Petersburg is more Black than neighboring Kupreanof (0% Black), Whale Pass (0% Black), Coffman Cove (0% Black), Hobart Bay (0% Black), and Port Protection (0% Black).

Petersburg's Asian Population

424 residents of Petersburg, or 13.1% of the population, identify as Asian. The share of Asian residents in Petersburg is higher than in Alaska overall, where 6.4% of the population is Asian. Petersburg ranks 30th statewide in terms of Asian residents as a share of the population, out of 355 places.

Since the 2020 Census, Petersburg's Asian population has grown by an estimated 278.6%. Asian residents' share of Petersburg's population has increased from 3.7% to 13.1%.

Petersburg is more Asian than neighboring Kupreanof (0% Asian), Whale Pass (0% Asian), Coffman Cove (0% Asian), Hobart Bay (0% Asian), and Port Protection (0% Asian).

Petersburg's Hispanic Population

279 residents of Petersburg, or 8.6% of the population, identify as Hispanic. The share of Hispanic residents in Petersburg is comparable to the share in Alaska overall, where 7.3% of the population is Hispanic. Petersburg ranks 77th statewide in terms of Hispanic residents as a share of the population, out of 355 places.

Since the 2020 Census, Petersburg's Hispanic population has grown by an estimated 84.8%. Hispanic residents' share of Petersburg's population has increased from 5.0% to 8.6%.

Petersburg is more Hispanic than neighboring Kupreanof (0% Hispanic), Whale Pass (0% Hispanic), Coffman Cove (0% Hispanic), Hobart Bay (0% Hispanic), and Port Protection (0% Hispanic).

Petersburg's Native American/Other Population

186 residents of Petersburg, or 5.8% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Petersburg is lower than in Alaska overall, where 15.5% of the population is Native American/Other. Petersburg ranks 247th statewide in terms of Native American/Other residents as a share of the population, out of 355 places.

Since the 2020 Census, Petersburg's Native American/Other population has declined by an estimated 21.5%. Native American/Other residents' share of Petersburg's population has decreased from 7.8% to 5.8%.

Petersburg is more Native American/Other than neighboring Kupreanof (0% Native American/Other), Whale Pass (0% Native American/Other), Coffman Cove (0% Native American/Other), Hobart Bay (0% Native American/Other), and Port Protection (0% Native American/Other).

Petersburg's Multiracial Population

287 residents of Petersburg, or 8.9% of the population, identify as Multiracial. The share of Multiracial residents in Petersburg is comparable to the share in Alaska overall, where 10.3% of the population is Multiracial. Petersburg ranks 63rd statewide in terms of Multiracial residents as a share of the population, out of 355 places.

Since the 2020 Census, Petersburg's Multiracial population has declined by an estimated 15.8%. Multiracial residents' share of Petersburg's population has decreased from 11.2% to 8.9%.

Petersburg is more Multiracial than neighboring Kupreanof (0% Multiracial), Whale Pass (0% Multiracial), Coffman Cove (2.6% Multiracial), Hobart Bay (0% Multiracial), and Port Protection (0% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.