| City: | Kobuk, Alaska |
| Borough: | Northwest Arctic Borough |
| Timezone: | Alaska (GMT -09:00) |
| Local Time: | 9:24:12 AM |
| Population: | 191 [See All] |
| Area Code: | 907 |
| Classification: | PO Box |
| Coordinates: | 67.0589, -155.9679 |
| Land Area: | 15.329 sq mi |
| Quick Link: |
There's no street delivery here. The post office maintains 3 PO Boxes, and that's the only way mail reaches residents. The classification isn't just a technicality—it reflects genuine geographic isolation. The nearest alternative delivery system doesn't exist. Rural carrier routes serve 2 delivery points along Airport Road and Riverside Road, but those are exceptional cases. For everyone else, a trip to the post office is the only option.
The median age of 21.8 years makes this one of Alaska's youngest communities. Extended households aren't uncommon when nearly 5 people share each of the 41 occupied housing units. The median household income of $31,429 is modest even by rural Alaska standards, but it doesn't capture the subsistence lifestyle that defines much of northwest Alaska. Only 9 people work from home according to census estimates, though that figure likely undercounts traditional subsistence activities.
Kobuk's postal infrastructure reflects a reality that hasn't changed much over decades. The post office opened before October 2004, though the exact date isn't recorded. What matters is that it remains the community's connection to the broader world. There's no city delivery here, no sprawling mail routes—just a small post office serving a small community that depends on it completely.
With only 2 named roads in the postal database, Kobuk's street infrastructure is minimal. Airport Road and Riverside Road are the only documented delivery points outside the post office itself, reflecting a community where formal street addresses are the exception rather than the rule.
ZIP Code 99751 has 191 residents and 41 households (average 4.46 persons per household). The median age is 21.8 years, significantly younger than the state (35.6) and significantly younger than the nation (38.8). The gender split is 51.8% male and 48.2% female, which is slightly higher than the national male share (49.1%), making this a male-majority area. Largest groups are American Indian & Alaska Native (83.8%, much higher than the state average of 15.2% and well above the national average of 1.1%) and White (10.5%, much lower than the state average of 59.4% and well below the national average of 61.6%); Hispanic or Latino residents make up 2.6%, which is much lower than the national average (18.7%), and American Indian & Alaska Native share is much higher than both the state (15.2%) and national averages (1.1%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 191Source: Census DHC |
| 2024 ACS Population Estimate: | 101Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 12.5 people per sq mile |
| Average Income: | $37,917Source: Census ACS |
| Households: | 41Source: Census DHC |
| Average House Value: | $666,666,666Source: Census ACS |
| Persons Per Household: | 4.46Source: Census DHC |
| Average Family Size: | 4.36Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 95 | 121 | 130 | 159 | 159 | 137 | 152 | 143 | 140 | 151 | 156 | 133 | 125 | 101 |
| Decennial Census | 151 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 191 | -- | -- | -- | -- |
Median Age: 21.8
Male Median Age: 20.7
Female Median Age: 23.7
| 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 | 10 | 12 | 9 | 15 | 12 | 7 | 5 | 3 | 7 | 5 | 1 | 5 | 5 | 0 | 1 | 1 | 1 | 0 |
| Female | 10 | 5 | 17 | 10 | 7 | 7 | 7 | 6 | 3 | 4 | 1 | 1 | 4 | 4 | 1 | 2 | 1 | 2 |
| Total | 20 | 17 | 26 | 25 | 19 | 14 | 12 | 9 | 10 | 9 | 2 | 6 | 9 | 4 | 2 | 3 | 2 | 2 |
| White: | 20 | 10.70% |
| Black: | 1 | 0.53% |
| Hispanic:* | 5 | 2.67% |
| Asian: | 1 | 0.53% |
| American Indian: | 160 | 85.56% |
| Hawaiian: | 0 | 0% |
| Other: | 0 | 0% |
| Total: | 187 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 99 | 51.83% | 20.7 years |
| Females: | 92 | 48.17% | 23.7 years |
| Total: | 191 | 100% | 21.8 years |
| Native, born in the United States: | 96 | 95.05% |
| Native, born in PR, Island Areas, or abroad: | 3 | 2.97% |
| Foreign born, naturalized U.S. citizen: | 2 | 1.98% |
| Foreign born, not a U.S. citizen: | 0 | 1.98% |
| Total Population: | 101 | 100% |
| Total Native Population: | 99 | 98.02% |
| Total Foreign-born Population: | 2 | 1.98% |
In 2024, the Median household income is $37,917, which is far less than the national median ($80,734), is up $6,667 (21.3%) since 2011 and below its 2019 pre-pandemic level by $17,083. Family households earn a median of $0 versus $0 for nonfamily households (a difference of $0). By gender, male median income is $0 and female is $0, which is considerably lower than the national female median ($55,274), with a current gap of $0 that has narrowed from 2011 to 2024. The labor-force participation rate is 47.6%, which is much lower than the national rate (63.5%). The unemployment rate is 0.0%, which is considerably lower than the national rate (5.2%). The largest occupation group is Sales (36.7%).
Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $31,250 | $30,313 | $48,750 | $43,750 | $43,333 | $48,750 | $52,500 | $53,750 | $55,000 | $38,125 | $29,688 | $36,250 | $31,429 | $37,917 |
| Median Family Income | $28,750 | $22,188 | $36,250 | $29,375 | $0 | $43,125 | $47,500 | $53,125 | $62,500 | $55,625 | $0 | $0 | $0 | $0 |
| Median NonFamily Income | $31,875 | $31,875 | $0 | $53,750 | $72,500 | $71,250 | $0 | $43,750 | $38,125 | $26,875 | $29,063 | $31,250 | $31,429 | $0 |
| Median Male Income | $90,625 | $0 | $0 | $30,833 | $0 | $46,250 | $36,875 | $41,250 | $49,375 | $36,563 | $39,250 | $45,000 | $43,125 | $0 |
| Median Female Income | $31,607 | $31,607 | $36,250 | $31,250 | $0 | $33,750 | $42,750 | $43,750 | $41,250 | $46,250 | $51,250 | $58,750 | $0 | $0 |
| Employed: | 30 | 47.62% |
| Unemployed: | 0 | 0.00% |
| Not In Labor Force: | 33 | 52.38% |
| Total: | 63 | 100% |
| Management, business, science, and arts: | 6 | 20.00% |
| Service: | 5 | 16.67% |
| Sales and Office: | 11 | 36.67% |
| Natural resources, construction, and maintenance: | 3 | 10.00% |
| Production, transportation, and material moving: | 5 | 16.67% |
| Total Civilian Employed Population: | 30 | 100% |
In 2024, the median home value is $0, which is much lower than the national median ($332,700), is down $103,100 (100.00%) since 2011 and below its 2019 pre-pandemic level by $133,300. The median gross rent is $0, which is well under the national median ($1,413), is down $950 (100.00%) since 2011 and below its 2019 pre-pandemic level by $775. Insufficient data for owner/renter mix. Insufficient data for vacancy rate.
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 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $103,100 | $101,400 | $100,000 | $109,100 | $110,400 | $97,500 | $118,800 | $120,800 | $133,300 | $109,400 | $115,600 | $131,300 | $0 | $0 |
| Less than $500: | 0 | 0.00% |
| $500 to $999: | 2 | 11.11% |
| $1,000 to $1,499: | 7 | 38.89% |
| $1,500 to $1,999: | 0 | 0.00% |
| $2,000 to $2,499: | 0 | 0.00% |
| $2,500 to $2,999: | 0 | 0.00% |
| $3,000 or more: | 0 | 0.00% |
| No Rent: | 9 | 50.00% |
| Total: | 18 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $950 | $0 | $0 | $925 | $738 | $650 | $725 | $700 | $775 | $875 | $1,031 | $1,125 | $1,304 | $0 |
| Owner Occupied (with mortgage): | 7 | 18.92% |
| Owner Occupied (free and clear, no mortgage): | 12 | 32.43% |
| Renter Occupied: | 18 | 48.65% |
| Total Occupied Housing Units: | 37 | 100% |
| Occupied Housing Units: | 37 | 66.07% |
| Vacant Housing Units (not graphed): | 19 | 33.93% |
| Total Housing Units: | 56 | 100% |
| Single-Family Units: | 54 | 96.43% |
| Multi-Family Units: | 2 | 3.57% |
| Other Units: | 0 | 0.00% |
| Total Housing Units: | 56 | 100% |
In 2024, 0.00% of adults (25+) have a bachelor's degree or higher, which is comparable to the national rate (35.70%). High school or higher is 77.10%, which is comparable to the national rate (89.60%). The uninsured rate is 22.80%, which is far higher than the national rate (8.40%). Private coverage is 33.70%, which is falls below the national rate (67.10%). The share of people in poverty is 12.50%, which is comparable to the national rate (8.80%), down 33.40 percentage points since 2011 and below its 2019 pre-pandemic level by 7.80 percentage points. This points to a pronounced improvement in local conditions - rising incomes, firmer consumer demand, and a stronger tax base. Among residents ages 3+, the largest enrollment group is elementary (60.71%). College enrollment is 0.00%, which is comparable to the national rate (26.70%), meaning the community mirrors broader higher-education participation.
Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment
| Less than 9th grade: | 5 | 10.42% |
| 9th to 12th grade, no diploma: | 6 | 12.50% |
| High school graduate (includes equivalency): | 21 | 43.75% |
| Some college, no degree: | 16 | 33.33% |
| Associate's degree: | 0 | 0.00% |
| Bachelor's degree: | 0 | 0.00% |
| Graduate or professional degree: | 0 | 0.00% |
| Total: | 48 | 100% |
| High school or higher: | 37 | 77.08% |
| Bachelor's degree or higher: | 0 | 0.00% |
| Private Insurance: | 34 | 32.69% |
| Public Insurance: | 47 | 45.19% |
| No Insurance: | 23 | 22.12% |
| Total: | 104 | 100% |
| Has Health Insurance: | 81 | 77.88% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 55.6% | 58.8% | 45.8% | 48.3% | 57.1% | 43.5% | 38.5% | 36.4% | 30.0% | 21.7% | 27.3% | 21.7% | 22.2% | 12.5% |
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: | 5 | 17.86% |
| Kindergarten: | 0 | 0.00% |
| Elementary school (grades 1-8): | 17 | 60.71% |
| High school (grades 9-12): | 6 | 21.43% |
| College or graduate school: | 0 | 0.00% |
| Total: | 28 | 100% |
| Early Childhood: | 5 | 17.86% |
| K-12 (Primary & Secondary School): | 23 | 82.14% |
ZIP Code 99751 is designated for PO Box delivery only; business establishment and employment data are not available.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 3Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 0Source: CBP |
| 1st Quarter Payroll: | $0Source: CBP |
| Annual Payroll: | $0Source: CBP |
| # of Employees: | 0Source: CBP |
ZIP Code 99751 is located in Northwest Arctic 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 99751. It covers 15.329 sq mi of land and a water area of 0.693 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: | 15.329 sq miSource: Census |
| Water Area: | 0.693 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: | 0240840Source: Census |
| Place Name: | Kobuk city; AlaskaSource: Census |
ZIP Code 99751 is in the Northwest Arctic Borough School District, which serves grades Pre-Kindergarten thru 12th. There are 1 public school(s) in this ZIP Code, and we have located 0 private school(s).
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 March 1, 2026.