| City: | Petersburg, Alaska |
| City Alias: | Kupreanof |
| Borough: | Petersburg Borough |
| Timezone: | Alaska (GMT -09:00) |
| Local Time: | 11:24:43 PM |
| Population: | 3,393 [See All] |
| Area Code: | 907 |
| Classification: | PO Box |
| Coordinates: | 56.7115, -133.1328 |
| Land Area: | 2959.593 sq mi |
| Quick Link: |
Petersburg sits on Mitkof Island in Southeast Alaska's Inside Passage, where Norwegian fishing heritage meets working waterfront reality. With 3,393 residents spread across 241 square miles, this isn't a vacation retreat. It's a fishing town where 1,063 workers (nearly a third of the workforce) handle transportation, warehousing, and seafood processing.
The Petersburg post office maintains 1,537 PO Boxes for 1,364 households. This is a PO Box Only Zone. There's no alternative mail delivery across the island territory. One rural carrier route serves scattered addresses along roads like Mitkof Highway and Sandy Beach Road, but most residents rely on boxes at the post office. The 1.13 adoption rate shows the post office also serves Kupreanof, the small community across Wrangell Narrows that was added as a valid mailing name in March 2011.
Street names tell Petersburg's story. Nordic Drive, Odin Street, Vesta Street, Balder Street, and Valkyrie Street honor the Norwegian fishermen who settled here. Harbor Way, Dock Street, and Sing Lee Alley mark the working waterfront. With 181 business establishments employing 903 people, fishing and seafood processing drive the economy. Federal employment is significant (251 workers), likely US Forest Service staff managing Tongass National Forest lands.
Petersburg has typical family demographics for an Alaskan fishing community. Median age is 42.2 years. Households average 2.5 people. The community is 73% white, 12% two or more races, and 7% American Indian. Median household income of $77,026 and home values around $301,300 indicate a stable working-class community. Only 12% of housing units are seasonal, far below what you'd see in a true resort area.
Mail addressed to Petersburg, AK 99833 or Kupreanof, AK 99833 arrives at the same post office. Most residents use PO Box addresses. The rural route serves homes along the road system, but coverage is limited on this island where access depends on boats and ferries.
Street names blend Norwegian heritage (Nordic, Odin, Vesta, Balder, Valkyrie) with working waterfront features (Harbor Way, Dock St, Sing Lee Alley).
ZIP Code 99833 has 3,393 residents and 1,364 households (average 2.35 persons per household). The median age is 42.2 years, older than the state (35.6) and older than the nation (38.8). The gender split is 52.0% male and 48.0% female, which is slightly higher than the national male share (49.1%), making this a male-majority area. Largest groups are White (72.8%, much higher than the state average of 59.4% and well above the national average of 61.6%) and American Indian & Alaska Native (7.2%, much lower than the state average of 15.2%); Hispanic or Latino residents make up 4.8%, which is much lower than the national average (18.7%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 3,393Source: Census DHC |
| 2024 ACS Population Estimate: | 3,394Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 1.1 people per sq mile |
| Average Income: | $77,026Source: Census ACS |
| Households: | 1,364Source: Census DHC |
| Average House Value: | $301,300Source: Census ACS |
| Persons Per Household: | 2.35Source: Census DHC |
| Average Family Size: | 2.74Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 3,278 | 3,380 | 3,277 | 3,212 | 3,221 | 3,196 | 3,275 | 3,255 | 3,257 | 3,278 | 3,368 | 3,374 | 3,394 |
| Decennial Census | 3,202 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 3,393 | -- | -- | -- |
Median Age: 42.2
Male Median Age: 42.8
Female Median Age: 41.5
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 81 | 109 | 107 | 94 | 98 | 82 | 138 | 118 | 84 | 84 | 124 | 127 | 145 | 142 | 119 | 66 | 29 | 18 |
| Female | 74 | 137 | 99 | 87 | 59 | 93 | 124 | 116 | 89 | 95 | 84 | 96 | 137 | 113 | 99 | 54 | 29 | 43 |
| Total | 155 | 246 | 206 | 181 | 157 | 175 | 262 | 234 | 173 | 179 | 208 | 223 | 282 | 255 | 218 | 120 | 58 | 61 |
| White: | 2,470 | 79.12% |
| Black: | 48 | 1.54% |
| Hispanic:* | 164 | 5.25% |
| Asian: | 123 | 3.94% |
| American Indian: | 243 | 7.78% |
| Hawaiian: | 13 | 0.42% |
| Other: | 61 | 1.95% |
| Total: | 3,122 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 1,765 | 52.02% | 42.8 years |
| Females: | 1,628 | 47.98% | 41.5 years |
| Total: | 3,393 | 100% | 42.2 years |
| Native, born in the United States: | 2,840 | 83.68% |
| Native, born in PR, Island Areas, or abroad: | 62 | 1.83% |
| Foreign born, naturalized U.S. citizen: | 316 | 9.31% |
| Foreign born, not a U.S. citizen: | 176 | 14.50% |
| Total Population: | 3,394 | 100% |
| Total Native Population: | 2,902 | 85.50% |
| Total Foreign-born Population: | 492 | 14.50% |
In 2023, the Median household income is $77,026, which is considerably lower than the state median ($89,336), is up $5,943 (8.4%) since 2011 and above its 2019 pre-pandemic level by $7,078. Family households earn a median of $94,821 versus $39,118 for nonfamily households (a difference of $55,703). By gender, male median income is $46,964 and female is $54,583, which is well under the state female median ($60,325), with a current gap of $7,619 that has narrowed from 2011 to 2023. The labor-force participation rate is 68.2%, which is notably higher than the national rate (63.5%). The unemployment rate is 4.1%, which is better than the state rate (5.4%). The largest occupation group is Management (23.8%).
Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $71,083 | $68,529 | $68,646 | $61,492 | $67,935 | $63,940 | $63,490 | $66,907 | $69,948 | $68,667 | $71,696 | $77,826 | $77,026 |
| Median Family Income | $91,090 | $88,333 | $91,100 | $84,844 | $83,750 | $79,931 | $75,250 | $78,482 | $83,125 | $76,731 | $84,779 | $90,037 | $94,821 |
| Median NonFamily Income | $37,411 | $35,377 | $31,875 | $36,111 | $36,364 | $32,833 | $33,333 | $35,875 | $38,558 | $33,472 | $37,500 | $35,368 | $39,118 |
| Median Male Income | $49,573 | $54,148 | $59,395 | $57,500 | $60,865 | $62,236 | $63,258 | $63,988 | $64,875 | $60,781 | $60,568 | $42,375 | $46,964 |
| Median Female Income | $35,156 | $32,367 | $32,471 | $38,594 | $43,657 | $42,679 | $41,964 | $42,422 | $47,875 | $52,637 | $55,104 | $57,500 | $54,583 |
| Employed: | 1,720 | 62.96% |
| Unemployed: | 76 | 2.78% |
| Not In Labor Force: | 936 | 34.26% |
| Total: | 2,732 | 100% |
| Management, business, science, and arts: | 410 | 23.84% |
| Service: | 377 | 21.92% |
| Sales and Office: | 397 | 23.08% |
| Natural resources, construction, and maintenance: | 259 | 15.06% |
| Production, transportation, and material moving: | 277 | 16.10% |
| Total Civilian Employed Population: | 1,720 | 100% |
In 2023, the median home value is $301,300, which is falls short of the state median ($333,300), is up $109,700 (57.25%) since 2011 and above its 2019 pre-pandemic level by $73,900. The median gross rent is $1,208, which is well under the state median ($1,388), is up $434 (56.07%) since 2011 and above its 2019 pre-pandemic level by $254. Of occupied housing, owners make up 70.96% (57.26% with a mortgage, 42.74% free-and-clear) and renters 29.04% - making this ZIP Code more home ownership than the state and under national rental averages. The vacancy rate is 29.50%, which is much higher than the national rate (10.43%).
Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $191,600 | $217,700 | $224,100 | $225,400 | $218,800 | $213,400 | $205,000 | $213,100 | $227,400 | $228,400 | $246,900 | $279,800 | $301,300 |
| Less than $500: | 49 | 12.79% |
| $500 to $999: | 68 | 17.75% |
| $1,000 to $1,499: | 126 | 32.90% |
| $1,500 to $1,999: | 54 | 14.10% |
| $2,000 to $2,499: | 19 | 4.96% |
| $2,500 to $2,999: | 1 | 0.26% |
| $3,000 or more: | 2 | 0.52% |
| No Rent: | 64 | 16.71% |
| Total: | 383 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $774 | $800 | $907 | $898 | $938 | $912 | $885 | $950 | $954 | $931 | $974 | $1,074 | $1,208 |
| Owner Occupied (with mortgage): | 536 | 40.64% |
| Owner Occupied (free and clear, no mortgage): | 400 | 30.33% |
| Renter Occupied: | 383 | 29.04% |
| Total Occupied Housing Units: | 1,319 | 100% |
| Occupied Housing Units: | 1,319 | 70.50% |
| Vacant Housing Units (not graphed): | 552 | 29.50% |
| Total Housing Units: | 1,871 | 100% |
| Single-Family Units: | 1,407 | 75.20% |
| Multi-Family Units: | 294 | 15.71% |
| Other Units: | 170 | 9.09% |
| Total Housing Units: | 1,871 | 100% |
In 2023, 27.50% of adults (25+) have a bachelor's degree or higher, which is far lower than the national rate (35.00%). High school or higher is 90.60%, which is generally lower than the state rate (93.50%). The uninsured rate is 10.90%, which is well above the national rate (8.60%). The share of people in poverty is 4.30%, which is far lower than the national rate (8.70%), down 1.30 percentage points since 2011 and below its 2019 pre-pandemic level by 0.40 percentage points. This suggests a positive shift in the local economic and social landscape - higher incomes, steadier consumer demand, and a strengthening tax base. Among residents ages 3+, the largest enrollment group is elementary (49.84%). College enrollment is 17.68%, which is far lower than the national rate (26.70%), indicating the community may be more oriented toward vocational/trade or direct-to-workforce opportunities.
Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment
| Less than 9th grade: | 127 | 5.15% |
| 9th to 12th grade, no diploma: | 105 | 4.26% |
| High school graduate (includes equivalency): | 731 | 29.64% |
| Some college, no degree: | 619 | 25.10% |
| Associate's degree: | 207 | 8.39% |
| Bachelor's degree: | 467 | 18.94% |
| Graduate or professional degree: | 210 | 8.52% |
| Total: | 2,466 | 100% |
| High school or higher: | 2,234 | 90.59% |
| Bachelor's degree or higher: | 677 | 27.45% |
| Private Insurance: | 2,116 | 54.21% |
| Public Insurance: | 1,428 | 36.59% |
| No Insurance: | 359 | 9.20% |
| Total: | 3,903 | 100% |
| Has Health Insurance: | 3,544 | 90.80% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 5.6% | 5.9% | 5.1% | 5.1% | 6.1% | 6.7% | 6.7% | 6.9% | 4.7% | 3.9% | 3.8% | 3.9% | 4.3% |
Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.
| Nursery School, Preschool: | 30 | 4.78% |
| Kindergarten: | 36 | 5.73% |
| Elementary school (grades 1-8): | 313 | 49.84% |
| High school (grades 9-12): | 138 | 21.97% |
| College or graduate school: | 111 | 17.68% |
| Total: | 628 | 100% |
| Early Childhood: | 66 | 10.51% |
| K-12 (Primary & Secondary School): | 487 | 77.55% |
ZIP Code 99833 supports both business and residential activity. According to the Business Census (2024), there are 186 business establishments, employing about 909 people with an annual payroll of $58,092,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 1,715Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 186Source: CBP |
| 1st Quarter Payroll: | $9,999,000Source: CBP |
| Annual Payroll: | $58,092,000Source: CBP |
| # of Employees: | 909Source: CBP |
ZIP Code 99833 is located in Petersburg Borough, Alaska, within the Metropolitan Statistical Area (CBSA ) and Alaska's 0th Congressional District. This area has a population of 0 people, about 0.00% of whom live in ZIP Code 99833. It covers 2959.593 sq mi of land and a water area of 693.715 sq mi.
| CBSA Name: | --Source: Census |
| CBSA Number: | --Source: Census |
| CBSA Type: | --Source: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 0Source: Census |
| MSA: | Source: Census |
| Land Area: | 2959.593 sq miSource: Census |
| Water Area: | 693.715 sq miSource: Census |
| Congressional District: | 00Source: USPS |
| Congressional Land Area: | 571951.26 sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0260310Source: Census |
| Place Name: | Petersburg CDP; AlaskaSource: Census |
ZIP Code 99833 is in the Petersburg Borough School District, which serves grades Pre-Kindergarten thru 12th. There are 3 public school(s) in this ZIP Code, and we have located 3 private school(s). It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.