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 04416 Bucksport Hancock County 207
ME 04417 Burlington Penobscot County 207
ME 04418 Greenbush Penobscot County 207
ME 04419 Carmel Penobscot County 207
ME 04420 Castine Hancock County 207
ME 04421 Castine Hancock County 207
ME 04422 Charleston Penobscot County 207
ME 04424 Danforth Washington County 207, 506
ME 04426 Dover Foxcroft Piscataquis County 207
ME 04427 Corinth Penobscot 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.