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Old Harbor city, AK

ZIP Code 99643 — Old Harbor city, AK Demographics & Data

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Low Income AreaLow Snow Area

Map, Quick Facts & Location

Quick Facts

Local time
Population
186
Median Income
$31,250
-58% vs US avg
Home Value
$95,000
-73% vs US avg
Median Rent
$481
-59% vs US avg
Median Age
33.0 yrs
-15% vs US avg
Area Code
Congress
Top Ancestry
GermanNorwegianRussian
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Location
Coordinates
57.2188, -153.3297
Elevation
80 ft
Land Area
20.1 sq mi
Water Area
2.4 sq mi (11% water)

At a glance

Population
186
Density
N/A
Median income
$31,250
-58% vs US avg
Home value
$95,000
-73% vs US avg
Median rent
$481
-59% vs US avg
Timezone

Overview of ZIP Code 99643

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What to know about ZIP 99643

ZIP code 99643 covers Old Harbor, AK in Kodiak Island Borough with a population of about 186.

At a glance, the area shows median age of 33.0 versus a U.S. median of about 38.9.

It sits in telephone area code 907; U.S. House district AK-00.

Income and economy in Old Harbor, AK

Median household income in ZIP 99643 is about $31,250 — about 58% below the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 55.4%; unemployment rate near 29.3%; 6.1% of adults with a bachelor’s degree or higher (about 27.6 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Public administration, Wholesale trade, and Agriculture; about 10.4% of workers reporting work-from-home (about 4.8 points below the U.S. share (15.2%)); a mean commute of about 43.0 minutes (U.S. average near 26.8).

Housing and affordability in ZIP 99643

Median home value is about $95,000 — about 73% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $481 (about 59% below the U.S. median rent ($1,163)), and owner-occupancy near 65.9% (roughly in line with the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 99643 in Old Harbor, AK, a household would need roughly $26,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $610. That sits below the local median household income ($31,250), suggesting the typical household income is closer to a workable buy-in level under these assumptions. Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

Climate risk and migration signals

Climate normals for Old Harbor city, AK show little to no average snow and around 78.3 inches of annual precipitation.

IRS migration statistics show a net inflow of about 7 for ZIP 99643 (Old Harbor city, AK) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.

Nearby (from this ZIP)

Airport ADQ (48.1 miles (77.4 km)) · Katmai National Park & Preserve (115.0 miles (185.0 km))

Full lists and map pins are in the Infrastructure section below.