ZIP Code 99638 in Nikolski, AK

Data Last Updated: February 1, 2026
City:Nikolski, Alaska
Borough:Aleutians West Borough
Timezone:Alaska (GMT -09:00)
Local Time:9:23:01 AM
Population:39 [See All]
Area Code:907
Classification:PO Box
Coordinates:52.9397, -168.8486
Land Area:132.051 sq mi
Quick Link:
https://www.zip-codes.com/zip-code/99638/zip-code-99638.asp

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In the United States, a county equivalent is a political or administrative subdivision of a state. It has a specific geographic area and some level of governmental authority. The term "county" is used in 47 states. Alaska, Louisiana, and Connecticut have functionally equivalent subdivisions called Boroughs, Parishes, and Planning Regions, respectively. They functionally act like counties by subdividing the state.

99638 Nikolski, AK - Aleutian Island Community

ZIP Code 99638, Nikolski

Tribal
LocationAleutians West County, AK
Area20.4 sq mi
Population39
Households22
PO Boxes0 No PO Boxes
Median Age36.5 years
Seasonal Housing12%
ZIP CreatedBefore Oct 2004
Key Facts
  • With 39 residents and 22 households, Nikolski is one of Alaska's smallest postal service areas
  • 69% of residents (27 of 39) are Alaska Native, reflecting the community's indigenous Aleut heritage
  • Mail arrives via two rural carrier routes serving just three roads: Driftwood Road, Nikolski Road, and Samagla
  • This isn't a PO Box Only Zone, but General Delivery service is available at the post office for flexible mail access
  • Four homes predate 1939, indicating continuous habitation since before World War II changed the Aleutians

Community Overview

Nikolski sits on Umnak Island in the Aleutian chain, one of Alaska's most remote communities. Just 39 people live in this village, spread across 20 square miles of volcanic terrain. Of these residents, 27 are Alaska Native (69% of the population), making this one of the smaller indigenous communities in the Aleutians West Census Area.

Mail Services in a Remote Setting

Mail arrives via two rural carrier routes serving three roads: Driftwood Road, Nikolski Road, and Samagla. The post office handles limited delivery, and General Delivery service is available for those without fixed addresses. With only 22 occupied housing units and no recorded PO Boxes in the latest postal data, this is among Alaska's smallest mail service areas.

The community is isolated but not a PO Box Only Zone. Residents can receive mail through rural delivery or General Delivery at the post office.

Demographics and Housing

The median age is 36.5 years, and nearly all residents were born in the United States (100% according to Census estimates). Four homes were built before 1939, reflecting the village's long history as an Aleut settlement. Of the 26 total housing units, 22 are occupied year-round, with just 3 used seasonally.

Economic Context

No commercial establishments are recorded in the Census business data. The economy centers on subsistence activities, limited government employment, and traditional practices. The population is small enough that detailed economic statistics aren't available, though one resident works in public administration and another in other services.

Mailing to Nikolski

Address mail to:

Recipient Name
Street Address or General Delivery
Nikolski, AK 99638

Street Name Patterns

Local Place Names

The three roads show minimal development: one named for the village, one for natural features, and one with indigenous language roots.

Interactive charts load automatically as you scroll. Hover for data, click to explore trends, and use the menu to export.

Population & Demographics


ZIP Code 99638 has 39 residents and 22 households (average 1.77 persons per household). The median age is 36.5 years, about the same as the state (35.6) and slightly younger than the nation (38.8). The gender split is 53.8% male and 46.2% female, which is higher than the national male share (49.1%), making this a male-majority area. Largest groups are American Indian & Alaska Native (69.2%, much higher than the state average of 15.2% and well above the national average of 1.1%) and White (15.4%, much lower than the state average of 59.4% and well below the national average of 61.6%); Hispanic or Latino residents make up 10.3%, 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

Source: U.S. Census 2020 Demographics & Housing Characteristics (DHC) and U.S. Census 2011-2024 American Community Survey (ACS) 5-Year Estimates.
2020 Population:39Source: Census DHC
2024 ACS Population Estimate:1Source: Census ACS
2026 ZC Population Estimate:0Source: ZIP-Codes.com
Population Density:0.3 people per sq mile
Average Income:$0Source: Census ACS
Households:22Source: Census DHC
Average House Value:$666,666,666Source: Census ACS
Persons Per Household:1.77Source: Census DHC
Average Family Size:1.57Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group201020112102201320142015201620172018201920202021202220232024
Census ACS Population Estimate--40303934373025262115171211
Decennial Census18------------------39--------
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

Population by Age & Gender (Total, Male, Female)


Median Age: 36.5

Male Median Age: 36.3

Female Median Age: 38

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male230020320032002101
Female022011132110310000
Total252031452142312101
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:615.38%
Black:00%
Hispanic:*410.26%
Asian:00%
American Indian:2769.23%
Hawaiian:00%
Other:25.13%
Total:39100%
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)
* NOTE: Hispanic or Latino is an ethnicity, not a race. This means individuals who identify as Hispanic will also be included in one of the race categories (such as White or Black). As a result, the totals shown here may exceed 100% when Hispanic is displayed alongside racial groups.

Gender Breakdown


GenderCount%Median Age
Males:2153.85%36.3 years
Females:1846.15%38.0 years
Total:39100%36.5 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:1100.00%
Native, born in PR, Island Areas, or abroad:00.00%
Foreign born, naturalized U.S. citizen:00.00%
Foreign born, not a U.S. citizen:00.00%
Total Population:1100%
Total Native Population:1100.00%
Total Foreign-born Population:00.00%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS
Note: Nativity and Citizenship derived from American Community Survey (ACS) 5-year estimates. Total Population listed here will not match official ZIP Code population totals, which are based on the Decennial Census.

Income & Employment


In 2024, the Median household income is $0, which is well under the national median ($80,734), is down $16,125 (100.0%) since 2011 and below its 2019 pre-pandemic level by $32,083. 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 widened from 2011 to 2024. The labor-force participation rate is 100.0%, which is much higher 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 Management (100.0%).

Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Tables DP02, DP03, DP04 and DP05.

Median Income Over Time (Household, Family, Nonfamily, Male, Female)


Income Type20112012201320142015201620172018201920202021202220232024
Median Household Income$16,125$16,786$24,375$26,250$35,000$35,000$37,500$36,250$32,083$35,000$41,250$0$0$0
Median Family Income$53,000$23,750$24,375$24,375$33,125$33,750$48,750$43,750$40,000$41,250$0$0$0$0
Median NonFamily Income$15,875$16,607$21,250$31,250$36,250$38,750$0$0$0$0$0$0$0$0
Median Male Income$0$0$0$0$0$0$0$0$0$0$0$0$0$0
Median Female Income$52,000$83,125$68,750$0$0$0$68,750$0$0$0$0$0$0$0
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income


Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment Status


Employed:1100.00%
Unemployed:00.00%
Not In Labor Force:00.00%
Total:1100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment by Occupation (Civilian Employed Population, 16 and Over)


Management, business, science, and arts:1100.00%
Service:00.00%
Sales and Office:00.00%
Natural resources, construction, and maintenance:00.00%
Production, transportation, and material moving:00.00%
Total Civilian Employed Population:1100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Housing & Affordability


In 2024, the median home value is $0, which is much lower than the national median ($332,700), is down $34,000 (100.00%) since 2011 and below its 2019 pre-pandemic level by $26,300. The median gross rent is $0, which is well under the national median ($1,413), is down $665 (100.00%) since 2011 and below its 2019 pre-pandemic level by $1,125. Insufficient data for owner/renter mix. Insufficient data for vacancy rate.

Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Table DP03, SELECTED ECONOMIC CHARACTERISTICS.

Median Home Value (Comparison)


Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Home Value Over Time


Group20112102201320142015201620172018201920202021202220232024
Median Home Value$34,000$34,400$75,000$45,000$45,000$0$26,700$20,000$26,300$0$0$0$0$0
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:00.00%
$500 to $999:1100.00%
$1,000 to $1,499:00.00%
$1,500 to $1,999:00.00%
$2,000 to $2,499:00.00%
$2,500 to $2,999:00.00%
$3,000 or more:00.00%
No Rent:00.00%
Total:1100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Gross Rent Over Time


Group20112102201320142015201620172018201920202021202220232024
Median Rent$665$850$850$1,025$950$850$725$950$1,125$0$0$0$0$0
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):00.00%
Owner Occupied (free and clear, no mortgage):00.00%
Renter Occupied:1100.00%
Total Occupied Housing Units:1100%

Occupied Housing Units:114.29%
Vacant Housing Units (not graphed):685.71%
Total Housing Units:7100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Housing Type (Single-Family, Multi-Family, Other)


Single-Family Units:685.71%
Multi-Family Units:00.00%
Other Units:114.29%
Total Housing Units:7100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


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 100.00%, which is comparable to the national rate (89.60%). The uninsured rate is 0.00%, which is comparable to the national rate (8.40%). The share of people in poverty is -666,666,666.00%, which is far lower than the national rate (8.80%), down 37.50 percentage points since 2011 and below its 2019 pre-pandemic level by 33.30 percentage points. This points to a pronounced improvement in local conditions - rising incomes, firmer consumer demand, and a stronger tax base. Insufficient data for school enrollment.

Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Tables DP02 and DP03.

Educational Attainment of Adults (25 and Older)


Less than 9th grade:00.00%
9th to 12th grade, no diploma:00.00%
High school graduate (includes equivalency):00.00%
Some college, no degree:1100.00%
Associate's degree:00.00%
Bachelor's degree:00.00%
Graduate or professional degree:00.00%
Total:1100%
High school or higher:1100.00%
Bachelor's degree or higher:00.00%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Health Insurance Coverage by Type (Private, Public, Uninsured)


Private Insurance:1100.00%
Public Insurance:00.00%
No Insurance:00.00%
Total:1100%
Has Health Insurance:1100.00%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Percentage of People in Poverty Over Time (2011-2024)


Group20112102201320142015201620172018201920202021202220232024
% of People in Poverty37.5%42.9%33.3%33.3%33.3%20.0%16.7%12.5%33.3%0.0%0.0%0.0%0.0%0.0%
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

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.

School Enrollment by Education Level (Ages 3 and Older)


Nursery School, Preschool:00%
Kindergarten:00%
Elementary school (grades 1-8):00%
High school (grades 9-12):00%
College or graduate school:00%
Total:0100%
Early Childhood:00%
K-12 (Primary & Secondary School):00%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 99638 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:0Source: 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

Geography, Land Area, & Statistical Classifications


ZIP Code 99638 is located in Aleutians West 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 99638. It covers 132.051 sq mi of land and a water area of 0.733 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:132.051 sq miSource: Census
Water Area:0.733 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:0254260Source: Census
Place Name:Nikolski CDP; AlaskaSource: Census

Adjacent & Nearby ZIP Codes


99639 | | 99637

Schools in ZIP Code 99638


We could not locate which school district 99638 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead.

Unalaska Jr/Sr High School 55 E Broadway
Unalaska, AK 99685
District: Unalaska City School DistrictNearby
Eagle's View Elementary School 503 East Broadway
Unalaska, AK 99685
District: Unalaska City School DistrictNearby
Akutan School 202 Volcano Dr
Akutan, AK 99553
District: Aleutians East Borough School DistrictNearby

Sources & References


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 February 1, 2026.

  1. U.S. Postal Service [Last Updated: 2/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 2/1/2026], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2024 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 2/1/2026], https://nces.ed.gov