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U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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Kenai Peninsula Borough ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Kenai Peninsula Borough.

County State ZIP Code City Area Codes
Kenai Peninsula Borough AK 99663 Seldovia 907
Kenai Peninsula Borough AK 99664 Seward 907
Kenai Peninsula Borough AK 99669 Soldotna 907
Kenai Peninsula Borough AK 99672 Sterling 907
Kenai Peninsula Borough AK 99682 Tyonek 907
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.