ZIP Code 99643: Old Harbor, AK
County: Kodiak Island
Coordinates: 57.20280, -153.30390
ZIP Type: Standard
Time Zone: Alaska Time (AKST/AKDT)
This profile provides an in-depth look at ZIP code 99643, serving Old Harbor in AK. It lies in Kodiak Island and supports delivery, planning, and address verification.
| Primary City | Old Harbor |
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| ZIP Code | 99643 |
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| County | Kodiak Island |
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| State | AK |
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| Latitude / Longitude | 57.20280, -153.30390 |
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| ZIP Type | Standard |
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| Time Zone | Alaska Time (AKST/AKDT) |
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| Data Updated | 2026-01-08 |
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Maps & Useful Links
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These links show the approximate center point for ZIP 99643 (not an exact boundary).
Geographic & Administrative Context
The geographic center of ZIP code 99643 is approximately 57.20280 (latitude) and -153.30390 (longitude). This location sits within Kodiak Island, contributing to regional planning across AK.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 99643 for mail delivery and general location reference in
Kodiak Island,
AK.
Some addresses near Old Harbor may share this ZIP due to delivery routing and local service areas.
Related ZIP Codes (Nearby)
Explore other postal codes near Old Harbor within AK.
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Frequently Asked Questions
What is the primary city for ZIP code 99643?
The primary city for this ZIP code is Old Harbor, located in AK.
In which county is 99643 located?
ZIP code 99643 is situated within Kodiak Island, AK.
What are the coordinates for 99643?
The approximate center point is 57.20280 (Latitude) and -153.30390 (Longitude).
Is ZIP code 99643 active?
This page lists ZIP 99643 as Listed based on the latest refresh date shown above.
Does ZIP 99643 cover multiple areas?
Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.
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Methodology & Data Notes
How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.
Page updated: 2026-01-08