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
County directory

Cecil County ZIP Codes

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

County State ZIP Code City Area Codes
Cecil County MD 21901 North East 410, 443, 667
Cecil County MD 21902 Perry Point 410, 443, 667
Cecil County MD 21903 Perryville 410, 443, 667
Cecil County MD 21904 Port Deposit 410, 443, 667
Cecil County MD 21911 Rising Sun 223, 410, 443, 484, 610, 667, 717, 835
Cecil County MD 21912 Warwick 302, 410, 443, 667
Cecil County MD 21913 Cecilton 410, 443, 667
Cecil County MD 21914 Charlestown 410, 443, 667
Cecil County MD 21915 Chesapeake City 302, 410, 443, 667
Cecil County MD 21916 Childs 410
Page 1 of 2

Geographic Map of Cecil County

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.