Home > AK > Kodiak Island County > Old Harbor > Zip 99643

Zip Code 99643 — Old Harbor, AK

99643 is a ZIP Code associated with Old Harbor, AK, located within Kodiak Island. The postal region supports an estimated population of 162 residents across Data Pending housing units, with a population density of 3.9 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (57.216690, -153.326580)

Data MetricLocal Statistic
Postal / Zip Code99643
Primary CityOld Harbor
State / ProvinceAK
CountyKodiak Island
Total Population162
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density3.9 people/sq mi
TimezoneAmerica/Anchorage

How 99643 Compares

MetricZIP 99643Kodiak Island CountyAK State Average
Population16212,771735,134
Median IncomeData PendingN/AN/A
Population Density3.9 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 99615Kodiak25.0 mi12,194N/A
Zip 99624Larsen Bay25.5 mi145N/A
Zip 99608Karluk45.0 mi33N/A
Zip 99550Port Lions48.5 mi150N/A
Zip 99644Ouzinkie59.3 mi87N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →