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
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State directory

Maine ZIP Codes

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

State ZIP Code City County Area Codes
ME 04022 Denmark Oxford County 207
ME 04024 East Baldwin Cumberland County 207
ME 04027 Lebanon York County 207, 603
ME 04028 East Parsonsfield York County 207
ME 04029 Sebago Cumberland County 207
ME 04030 East Waterboro York County 207
ME 04032 Freeport Cumberland County 207
ME 04033 Freeport Cumberland County 207
ME 04034 Freeport Cumberland County 207
ME 04037 Fryeburg Oxford County 207, 603
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Geographic Map of Maine

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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.