99643 ZIP Code — Old Harbor, AK

Kodiak Island County, Alaska

ZIP code 99643 is located in Old Harbor, Alaska, within Kodiak Island County. It covers approximately 15.93 square miles and serves a population of 155 residents. This is a standard ZIP code in the Alaska (AKT) timezone, served by area code 907.

155
population
15.93
sq mi land
Standard
ZIP type
Alaska (AKT)
timezone
99643 ZIP code map
Cities in ZIP code 99643

Below are the cities the US Postal Service accepts for ZIP code 99643. Using any city not on this list may result in mail delivery delays.

City Status
Old Harbor Acceptable
Demographics updated 06/2026
Population
Total population 155
Population density 10 / sq mi
State FIPS 02
County FIPS 150
Geography
Land area 15.93 sq mi
Water area 6.40 sq mi
Latitude 57.2205
Longitude -153.3213
Timezone Alaska (AKT)
Area code 907
Total population by age
Gender
Race & ethnicity
Economics updated 06/2026
Household income
Income range This ZIP County avg State avg
Under $50k 73.3% 26.2% 29.8%
$50k – $100k 22.2% 34.4% 32.4%
$100k – $200k 2.2% 34.2% 28.9%
Over $200k 2.2% 5.2% 8.8%

Demographics & statistics

155
Population
10
People per sq mi
32.8
Median age
$40,156
Median household income
$21,641
Per capita income
$122,900
Median home value
$888
Median monthly rent
65.3%
Home ownership
44.5%
Poverty rate
28.2%
Unemployment
102
Housing units
7.6%
Bachelor's or higher

Age distribution

Male Female
8
Under 5
7
8
5–9
7
2
10–14
1
2
15–19
1
15
20–24
12
9
25–34
8
6
35–44
5
12
45–54
9
10
55–59
9
5
60–64
4
6
65–74
5
2
75–84
1
1
85+
0
← Male
Female →

Age summary

GroupCount%
Under 183623.2%
18 and over11976.8%
65 and over159.7%
Median age32.8 years

Race & ethnicity

American Indian / Alaska Native 63.2%
White 18.7%
Two or more races 16.8%
Native Hawaiian / Pacific Islander 1.3%
GroupCount%
American Indian / Alaska Native9863.2%
White2918.7%
Two or more races2616.8%
Native Hawaiian / Pacific Islander21.3%

Household income

Income range This ZIP County avg State avg
Under $50k 73.3% 26.2% 29.8%
$50k – $100k 22.2% 34.4% 32.4%
$100k – $200k 2.2% 34.2% 28.9%
Over $200k 2.2% 5.2% 8.8%
Under $10k 22.7%
$10k–$15k 6.7%
$15k–$25k 14.7%
$25k–$35k 1.3%
$35k–$50k 25.3%
$50k–$75k 9.3%
$75k–$100k 6.7%
$100k–$150k 4.0%
$150k–$200k 9.3%
Range% of households
Under $10k22.7%
$10k–$15k6.7%
$15k–$25k14.7%
$25k–$35k1.3%
$35k–$50k25.3%
$50k–$75k9.3%
$75k–$100k6.7%
$100k–$150k4.0%
$150k–$200k9.3%
Median income$40,156

Housing

Home values

Under $50k 12.2%
$50k–$100k 26.5%
$100k–$150k 12.2%
$150k–$200k 20.4%
$200k–$300k 8.2%
$300k–$500k 20.4%

Housing overview

MetricValue
Median home value$122,900
Median rent / month$888
Owner occupied65.3%
Renter occupied34.7%
Vacant41.4%
Single-family detached98.4%
Large apartment buildings0.0%
Mobile homes0.0%
Median rooms3.8
Avg household size (owned)1.78

Year built

Era%
2020 or later0.0%
2010–20190.0%
2000–200911.7%
1990–19994.7%
1980–198925.0%
1970–197937.5%
1960–196921.1%
1950–19590.0%
1940–19490.0%
1939 or earlier0.0%

Bedrooms

Size% of units
No bedroom (studio)3.1%
1 bedroom4.7%
2 bedrooms52.3%
3 bedrooms28.1%
4 bedrooms10.2%
5+ bedrooms1.6%

Vehicles per household

Vehicles% of households
No vehicle48.0%
1 vehicle22.7%
2 vehicles5.3%
3 or more24.0%

Heating fuel

Fuel type%
Propane / LP gas2.7%
Fuel oil96.0%
Wood1.3%

Households & families

Household typeCount%
Married-couple family1520.0%
Cohabiting couple1418.7%
Male householder, no spouse3344.0%
Female householder, no spouse1317.3%
Households with children under 183040.0%
Households with seniors (65+)1520.0%
Average household size2.07

Marital status

StatusMaleFemale
Never married60.3%50.8%
Married22.2%30.5%
Separated0.0%0.0%
Widowed6.3%5.1%
Divorced11.1%13.6%

Education

Less than 9th grade 5.4%
Some HS, no diploma 10.9%
HS graduate 52.2%
Some college, no degree 16.3%
Associate's degree 7.6%
Bachelor's degree 7.6%
Graduate / professional 0.0%
Metric%
HS diploma or higher83.7%
Bachelor's or higher7.6%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool27.4%
Kindergarten00.0%
Elementary school1866.7%
High school311.1%
College / grad school414.8%

Employment

Industry of employment

Public administration 42.9%
Education & healthcare 17.9%
Agriculture & mining 12.5%
Wholesale trade 8.9%
Transportation & utilities 7.1%
Retail trade 3.6%
Arts, food & hospitality 3.6%
Construction 1.8%
Other services 1.8%

Occupation

Category%
Management, business & arts7.1%
Service21.4%
Sales & office32.1%
Natural resources & construction14.3%
Production & transportation25.0%

Employment type

Type%
Private sector16.1%
Government66.1%
Self-employed17.9%
Unpaid family workers0.0%

Commute

Method%
Drive alone63.0%
Carpool14.8%
Public transit0.0%
Walk3.7%
Work from home9.3%
Other means9.3%
Avg commute (minutes)4.5

Poverty

All people 44.5%
Under 18 years 66.7%
18 and over 37.8%
Married-couple families 0.0%
Female-led households 81.3%

Income support

Source% of households
Social Security20.0%
Retirement income8.0%
Supplemental Security4.0%
Cash public assistance33.3%
Food stamps / SNAP37.3%

Health indicators

Condition%
Obesity40.6%
High blood pressure36.2%
High cholesterol30.5%
Diabetes13.4%
Heart disease7.5%
Stroke4.2%
Asthma11.4%
Arthritis23.0%
Kidney disease3.3%
Pulmonary disease7.7%
Cancer5.4%
Behavior / access%
Smoking29.2%
Binge drinking20.1%
No physical activity26.5%
Less than 7 hrs sleep37.7%
Depression17.8%
Fair or poor health19.0%
Poor mental health15.6%
Poor physical health13.1%
No health insurance15.4%
Visited doctor (checkup)63.7%
Visited dentist55.2%
Cholesterol screening85.8%
Teeth loss21.7%

Veterans & disability

VeteransCount%
Civilian veterans119.2%
Disability%
Any disability13.5%
Under 180.0%
18–64 years13.5%
65 and over46.7%

Health insurance coverage

Type%
Private insurance14.2%
Public insurance62.6%
No insurance26.5%
Uninsured under 1911.1%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only14090.3%
Spanish42.9%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)15398.7%
Born in same state15398.7%
Born in different state12580.6%
Foreign born00.0%
Naturalized citizen21.3%
Not a US citizen00.0%

Ancestry

AncestryCount%
Polish106.5%
Dutch53.2%
AncestryCount%
French42.6%
Italian31.9%

Technology access

Metric% of households
Computer access48.4%
Internet access68.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 99643

What city is ZIP code 99643 in?

ZIP code 99643 is primarily assigned to Old Harbor, Alaska.

What county is ZIP code 99643 in?

ZIP code 99643 falls within Kodiak Island County, Alaska.

What is the poverty rate in ZIP code 99643?

45% of residents in ZIP code 99643 live below the poverty line, above the national average.

How educated is the population of ZIP code 99643?

8% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What is the typical home value in ZIP code 99643?

The median home value in ZIP code 99643 is $122,900.

Does ZIP code 99643 have a large veteran population?

9% of civilians in ZIP code 99643 are veterans, above the national average of ~7%.

What timezone is ZIP code 99643 in?

ZIP code 99643 observes the AKST timezone.

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