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 04568 South Bristol Lincoln County 207
ME 04570 Squirrel Island Lincoln County 207
ME 04571 Trevett Lincoln County 207
ME 04572 Waldoboro Lincoln County 207
ME 04573 Walpole Lincoln County 207
ME 04574 Washington Knox County 207
ME 04575 West Boothbay Harbor Lincoln County 207
ME 04576 Southport Lincoln County 207
ME 04578 Wiscasset Lincoln County 207
ME 04579 Woolwich Sagadahoc 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.