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
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State directory

Maryland ZIP Codes

Complete postal directory, details, and geographic map for the State of Maryland.

State ZIP Code City County Area Codes
MD 21838 Marion Station Somerset County 410, 443, 667, 757, 948
MD 21840 Nanticoke Wicomico County 410, 443, 667
MD 21841 Newark Worcester County 410, 443, 667
MD 21842 Ocean City Worcester County 302, 410, 443, 667
MD 21843 Ocean City Worcester County 410
MD 21849 Parsonsburg Wicomico County 302, 410, 443, 667
MD 21850 Pittsville Wicomico County 302, 410, 443, 667
MD 21851 Pocomoke City Worcester County 410, 443, 667, 757, 948
MD 21852 Powellville Wicomico County 410
MD 21853 Princess Anne Somerset County 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.