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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.

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Queen Anne's County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Queen Anne's County.

County State ZIP Code City Area Codes
Queen Anne's County MD 21666 Stevensville 410, 443, 667
Queen Anne's County MD 21668 Sudlersville 302, 410, 443, 667
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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.