U.S. postal lookup

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.

42,735 verified records
All states and U.S. territories
Maps and coordinates
State directory

Alaska ZIP Codes

Complete postal directory, details, and geographic map for the State of Alaska.

State ZIP Code City County Area Codes
AK 99603 Homer Kenai Peninsula Borough 907
AK 99604 Hooper Bay Kusilvak Census Area 907
AK 99605 Hope Kenai Peninsula Borough 907
AK 99606 Iliamna Lake and Peninsula Borough 907
AK 99607 Kalskag Bethel Census Area 907
AK 99608 Karluk Kodiak Island Borough 907
AK 99609 Kasigluk Bethel Census Area 907
AK 99610 Kasilof Kenai Peninsula Borough 907
AK 99611 Kenai Kenai Peninsula Borough 907
AK 99612 King Cove Aleutians East Borough 907
Page 8 of 28

Geographic Map of Alaska

Postal context

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.