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 04750 Limestone Aroostook County 207, 506
ME 04751 Limestone Aroostook County 207
ME 04756 Madawaska Aroostook County 207, 506
ME 04757 Mapleton Aroostook County 207
ME 04758 Mars Hill Aroostook County 207, 506
ME 04760 Monticello Aroostook County 207, 506
ME 04761 New Limerick Aroostook County 207
ME 04762 New Sweden Aroostook County 207
ME 04763 Oakfield Aroostook County 207
ME 04764 Oxbow Aroostook 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.