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

Carroll County ZIP Codes

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

County State ZIP Code City Area Codes
Carroll County KY 41083 Sanders 502, 859
Carroll County MD 21048 Finksburg 410, 443, 667
Carroll County MD 21074 Hampstead 410, 443, 667
Carroll County MD 21088 Lineboro 410
Carroll County MD 21102 Manchester 223, 410, 443, 667, 717
Carroll County MD 21157 Westminster 410, 443, 667
Carroll County MD 21158 Westminster 223, 410, 443, 667, 717
Carroll County MD 21776 New Windsor 227, 240, 301, 410, 443, 667
Carroll County MD 21784 Sykesville 410, 443, 667
Carroll County MD 21787 Taneytown 227, 240, 301, 410, 443, 667
Page 6 of 14

Geographic Map of Carroll 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.