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U.S. ZIP Codes Database 2026

Name: Waldo County
Address: US

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Waldo County ZIP Codes

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

County	State	ZIP Code	City	Area Codes
Waldo County	ME	04949	Liberty	`207`
Waldo County	ME	04951	Monroe	`207`
Waldo County	ME	04952	Morrill	`207`
Waldo County	ME	04972	Sandy Point	`207`
Waldo County	ME	04973	Searsmont	`207`
Waldo County	ME	04974	Searsport	`207`
Waldo County	ME	04981	Stockton Springs	`207`
Waldo County	ME	04986	Thorndike	`207`
Waldo County	ME	04987	Troy	`207`
Waldo County	ME	04988	Unity	`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.