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 04535 Alna Lincoln County 207
ME 04537 Boothbay Lincoln County 207
ME 04538 Boothbay Harbor Lincoln County 207
ME 04539 Bristol Lincoln County 207
ME 04541 Chamberlain Lincoln County 207
ME 04543 Damariscotta Lincoln County 207
ME 04544 East Boothbay Lincoln County 207
ME 04547 Friendship Knox County 207
ME 04548 Georgetown Sagadahoc County 207
ME 04549 Isle Of Springs Lincoln County 207
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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.