ZIP Code Tabulation Area · Alaska

ZIP Code 99643: Old Harbor, AK

ZIP Code 99643 (Old Harbor, Kodiak Island Borough, Alaska) has an estimated 162 residents in 86 households. The median household income is $30,000, the median home value is — and the median gross rent is —. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated Oct 26, 2026

Some estimates have a large margin of error. 7 figures for this ZIP (median age, household income, poverty rate, unemployment, bachelor's or higher, owner-occupied, commute) are marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

162

Margin of error ±78

Median household income

$30,000*

Margin of error ±$26,136· estimate has a large margin of error

Median home value

—

Margin of error not available

Median gross rent

—

Margin of error not available

Median age

34.2 yrs*

Margin of error ±20.2 yrs· estimate has a large margin of error

Mean travel time to work

4.9 min*

Margin of error ±5.0 min· estimate has a large margin of error

How ZIP 99643 compares with Alaska and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 9964334.2 yrs*Alaska35.8 yrsUnited States38.9 yrs

Median household income

ZIP 99643$30,000*Alaska$92,788United States$80,734

Per capita income

ZIP 99643$21,038Alaska$46,573United States$44,673

Poverty rate

ZIP 9964356.2%*Alaska10.1%United States12.5%

Unemployment rate

ZIP 9964326.8%*Alaska5.9%United States5.2%

Bachelor's degree or higher

ZIP 9964310.1%*Alaska31.7%United States35.7%

Median home value

ZIP 99643—Alaska$352,900United States$332,700

Median gross rent

ZIP 99643—Alaska$1,419/moUnited States$1,413/mo

Owner-occupied homes

ZIP 9964367.4%*Alaska66.8%United States65.2%

Mean travel time to work

ZIP 996434.9 min*Alaska19.4 minUnited States26.4 min

Worked from home

ZIP 996439.6%Alaska9.7%United States15.1%

All figures for ZIP 99643

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 99643 — ACS 2020–2024 5-year estimates
Measure	ZIP 99643	Margin of error	Alaska	United States
Total population	162	±78	735,706	334,922,499
Median age	34.2 yrs*	±20.2 yrs	35.8 yrs	38.9 yrs
Households	86	±38	270,533	129,227,496
Median household income	$30,000*	±$26,136	$92,788	$80,734
Per capita income	$21,038	±$7,642	$46,573	$44,673
Poverty rate	56.2%*	±32.9 pts	10.1%	12.5%
Unemployment rate	26.8%*	±19.5 pts	5.9%	5.2%
Bachelor's degree or higher	10.1%*	±21.0 pts	31.7%	35.7%
Median home value	—	—	$352,900	$332,700
Median gross rent	—	—	$1,419/mo	$1,413/mo
Owner-occupied homes	67.4%*	±40.0 pts	66.8%	65.2%
Mean travel time to work	4.9 min*	±5.0 min	19.4 min	26.4 min
Worked from home	9.6%	±7.3 pts	9.7%	15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 99643
Group	ZIP 99643	Alaska	United States
White alone, not Hispanic or Latino	8.0%	57.7%	57.4%
Black or African American alone, not Hispanic or Latino	0.0%	2.9%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	72.8%	13.2%	0.5%
Asian alone, not Hispanic or Latino	0.0%	6.4%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	1.2%	1.5%	0.2%
Some other race alone, not Hispanic or Latino	0.0%	0.7%	0.6%
Two or more races, not Hispanic or Latino	17.9%	10.3%	4.3%
Hispanic or Latino (of any race)	0.0%	7.3%	19.3%

Where ZIP 99643 is

State: Alaska
Main county: Kodiak Island Borough
Largest overlapping place: Old Harbor (100% of the ZIP's land area)
Land area: 15.93 sq mi· about 10 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Kodiak Island Borough

99550 Port Lions, AK 99608 Karluk, AK 99615 Kodiak Island Borough, AK 99624 Larsen Bay, AK 99644 Ouzinkie, AK

See every ZIP code in Alaska, or compare ZIP 99643 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.