ZIP code 99643: Old Harbor, AK
99643 is a ZIP code in Old Harbor, Alaska, mainly in Kodiak Island Borough. About 162 people live here.
- Population
- 162
- Median household income
- $30,000
- Typical home value
- —
- Median rent
- —gross, per month
- Median age
- 34.2
- Homeowners
- 67.4%of occupied homes
Shaded: ZIP code 99643's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 99643 details
| City | Old Harbor |
|---|---|
| State | Alaska |
| County | Kodiak Island Borough |
| Metro area | Not in a metro or micro area |
| Time zone | Alaska Time (UTC−9), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 15.9 sq mi, plus 6.4 sq mi of water |
| Population density | 10 people per sq mi |
| Bachelor's degree or higher | 10.1% of adults 25+ |
| Center coordinates | 57.21880, -153.32967 |
ZIP codes near 99643
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 99624 | Larsen Bay, AK | 27.0 mi | 145 |
| 99615 | Kodiak, AK | 32.1 mi | 12,194 |
| 99608 | Karluk, AK | 46.3 mi | 33 |
| 99550 | Port Lions, AK | 48.1 mi | 150 |
| 99697 | Kodiak, AK | 52.2 mi | — |
| 99619 | Kodiak, AK | 52.2 mi | — |
| 99644 | Ouzinkie, AK | 59.3 mi | 87 |
| 99613 | King Salmon, AK | 148.1 mi | 376 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
About ZIP code 99643
What city is ZIP code 99643?
ZIP code 99643 is in Old Harbor, AK, in Kodiak Island Borough.
What county is ZIP code 99643 in?
99643 is mainly in Kodiak Island Borough, Alaska.
What is the population of ZIP code 99643?
About 162 people live in ZIP code 99643, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 99643 in?
99643 is in Alaska Time (UTC−9). It observes daylight saving time.