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.

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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 04010 Brownfield Oxford County 207, 603
ME 04011 Brunswick Cumberland County 207
ME 04013 Bustins Island Cumberland County 207
ME 04014 Cape Porpoise York County 207
ME 04015 Casco Cumberland County 207
ME 04016 Center Lovell Oxford County 207
ME 04017 Chebeague Island Cumberland County 207
ME 04019 Cliff Island Cumberland County 207
ME 04020 Cornish York County 207
ME 04021 Cumberland Center Cumberland County 207
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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.