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	03911	York Harbor	York County	`207`
ME	04001	Acton	York County	`207, 603`
ME	04002	Alfred	York County	`207`
ME	04003	Bailey Island	Cumberland County	`207`
ME	04004	Bar Mills	York County	`207`
ME	04005	Biddeford	York County	`207`
ME	04006	Biddeford Pool	York County	`207`
ME	04007	Biddeford	York County	`207`
ME	04008	Bowdoinham	Sagadahoc County	`207`
ME	04009	Bridgton	Cumberland County	`207`

Page 2 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.