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U.S. ZIP Codes Database 2026

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Aroostook County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Aroostook County.

County State ZIP Code City Area Codes
Aroostook County ME 04768 Portage 207
Aroostook County ME 04769 Presque Isle 207
Aroostook County ME 04772 Saint Agatha 207
Aroostook County ME 04773 Saint David 207, 506
Aroostook County ME 04774 Saint Francis 207
Aroostook County ME 04775 Sheridan 207
Aroostook County ME 04776 Sherman 207
Aroostook County ME 04779 Sinclair 207
Aroostook County ME 04780 Smyrna Mills 207
Aroostook County ME 04781 Wallagrass 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.