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
All states and U.S. territories
Maps and coordinates
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 04738 Crouseville Aroostook County 207
ME 04739 Eagle Lake Aroostook County 207
ME 04740 Easton Aroostook County 207, 506
ME 04741 Estcourt Station Aroostook County 207
ME 04742 Fort Fairfield Aroostook County 207, 506
ME 04743 Fort Kent Aroostook County 207, 367, 418, 506, 581
ME 04744 Fort Kent Mills Aroostook County 207
ME 04745 Frenchville Aroostook County 207, 506
ME 04746 Grand Isle Aroostook County 207, 506
ME 04747 Island Falls Aroostook County 207
Page 37 of 49

Geographic Map of Maine

Postal context

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.